[Theme: LeetPress] ?Full Width Page?

Hi everyone.
I need to remove the right column where the widgets are installed on a page with screenshots. p.s. https://metrogame.pro/screenshot

<?php get_header(); ?>

	<!-- BEGIN MAIN WRAPPER -->
	<div id="main-wrapper">

		<!-- BEGIN MAIN -->
		<div id="main">

			<!-- BEGIN POST -->
			<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
			<div id="post">

				<h1 class="post-header"><?php the_title(); ?></h1>

				<p class="post-meta">Опубликовано <?php the_time( get_option('date_format') ); ?>, by <?php the_author(); ?> - Posted in <?php echo get_the_term_list( $post->ID, 'screenshots_category', ' ',', ' ) ?> <span class="meta-comment"><a href="#respond"><?php comments_number('0', '1', '%' );?></a></span></p>

				<div class="post-screenshot">

					<ul>
						<?php
						// BEGIN SCREENSHOTS GALLERY
						$attachment_args = array(
							 'post_type' => 'attachment',
							 'numberposts' => -1,          // one attachement image per post
							 'post_status' => null,
							 'post_parent' =>$post->ID,
							 'orderby' => 'menu_order ID'
						);
						$attachments = get_posts($attachment_args);
						if ($attachments) {
						  foreach($attachments as $gall_image )
						  {
							$att_img =  wp_get_attachment_url( $gall_image->ID);
							echo '<li>';
							echo '<a class="grouped_elements" rel="group1" href="'.$att_img.'" title="'.$gall_image->post_title.'">';
							echo  '<img src="'.get_bloginfo('template_url').'/scripts/timthumb.php?src='.$att_img.'&w=140&h=100&zc=1" alt=""/>';
							echo '</a>';
							echo '</li>';
						  }
						}

						?>
					</ul>

					<div class="line-bottom"></div>

				</div>

				<div class="post-entry">
					<?php the_content(); ?>
					<?php wp_link_pages('before=<span class="page-links"><strong>Pages:</strong> &after=</span>'); ?>
				</div>

				<?php if(get_option('lp_share_post') == "false" || get_option('lp_share_post') == "") { ?>
				<div class="post-share">
					<p>Поделиться</p>
					<ul>
						<li><a href="<?php bloginfo('rss2_url'); ?>" title="Subscribe to our feed"><img src="<?php echo get_template_directory_uri(); ?>/images/rss-big.png" alt="" /></a></li>
						<?php if (get_option('lp_share_post_facebook') == "true") { ?>
						<li><a href="https://www.facebook.com/sharer.php?u=<?php the_permalink();?>?t=<?php the_title(); ?>" title="Post to Facebook"><img src="<?php echo get_template_directory_uri(); ?>/images/facebook-big.png" alt="Facebook" /></a></li>
						<?php } ?>
						<?php if (get_option('lp_share_post_twitter') == "true") { ?>
						<li><a href="https://twitter.com/home/?status=<?php the_title(); ?>&nbsp;-&nbsp;<?php the_permalink(); ?>" title="Post to Twitter"><img src="<?php echo get_template_directory_uri(); ?>/images/twitter-big.png" alt="Twitter" /></a></li>
						<?php } ?>
						<?php if (get_option('lp_share_post_myspace') == "true") { ?>
						<li><a href="https://www.myspace.com/index.cfm?fuseaction=postto&t=<?php the_title(); ?>&c=Check this out&u=<?php the_permalink(); ?>&l=>" title="Post to Myspace"><img src="<?php echo get_template_directory_uri(); ?>/images/myspace.png" alt="Myspace" /></a></li>
						<?php } ?>
						<?php if (get_option('lp_share_post_google') == "true") { ?>
						<li><a href="https://www.google.com/reader/link?title=<?php the_title();?>&url=<?php the_permalink();?>" title="Google Buzz"><img src="<?php echo get_template_directory_uri(); ?>/images/google.png" alt="Google Buzz" /></a></li>
						<?php } ?>
						<?php if (get_option('lp_share_post_reddit') == "true") { ?>
						<li><a href="https://www.reddit.com/submit?url=<?php the_permalink(); ?>&title=<?php the_title(); ?>" title="Share on Reddit"><img src="<?php echo get_template_directory_uri(); ?>/images/reddit.png" alt="Reddit" /></a></li>
						<?php } ?>
						<?php if (get_option('lp_share_post_stumbleupon') == "true") { ?>
						<li><a href="https://www.stumbleupon.com/submit?url=<?php the_permalink(); ?>&title=<?php the_title(); ?>" title="Stumble this"><img src="<?php echo get_template_directory_uri(); ?>/images/stumbleupon.png" alt="Stumnleupon" /></a></li>
						<?php } ?>
						<?php if (get_option('lp_share_post_delicious') == "true") { ?>
						<li><a href="https://del.icio.us/post?url=<?php the_permalink();?>&title=<?php the_title(); ?>" title="Add To Delicious"><img src="<?php echo get_template_directory_uri(); ?>/images/delicious.png" alt="Delicious" /></a></li>
						<?php } ?>
						<?php if (get_option('lp_share_post_digg') == "true") { ?>
						<li><a href="https://digg.com/submit?url=<?php the_permalink();?>&title=<?php the_title(); ?>&thumbnails=1" title="Digg this!"><img src="<?php echo get_template_directory_uri(); ?>/images/digg.png" alt="Digg" /></a></li>
						<?php } ?>
						<?php if (get_option('lp_share_post_technorati') == "true") { ?>
						<li><a href="https://technorati.com/signup/?f=favorites&Url=<?php the_permalink(); ?>" title="Post to Technorati"><img src="<?php echo get_template_directory_uri(); ?>/images/technorati.png" alt="Technorati" /></a></li>
						<?php } ?>
						<?php if (get_option('lp_share_post_email') == "true") { ?>
						<li class="email"><a href="mailto:?subject=<?php the_title(); ?>&body=<?php the_permalink(); ?>" title="Email a Friend"><img src="<?php echo get_template_directory_uri(); ?>/images/email.png" alt="Email" /></a></li>
						<?php } ?>
					</ul>
				</div>
				<?php } ?>

				<?php if(get_option('lp_author_box') == "false" || get_option('lp_author_box') == "") { ?>
				<div id="about-author">

					<?php echo get_avatar( get_the_author_email(), '75' ); ?>
					<h5><strong>Автор:</strong> <?php the_author(); ?> <small>Посмотреть все записи <?php the_author_posts_link(); ?></small></h5>
					<div class="author-descrip"><?php the_author_meta("description"); ?></div>

				</div>
				<?php } ?>

				<!-- BEGIN COMMENTS -->
				<div id="comments">

					<?php comments_template(); ?>

				</div>
				<!-- END COMMENTS -->

			</div>
			<!-- END POST -->
			<?php endwhile; endif; ?>

		</div>
		<!-- END MAIN -->

<?php get_sidebar(); ?>

<?php get_footer(); ?>

The problem is that when I remove the “<? Php get_sidebar ();?>”, a page is as follows:
https://s60.radikal.ru/i167/1305/ec/91e3d8234f88.jpg

I need to stretch the center column to the right edge. Just when I post new screenshots, appears in the bottom right to scroll to view the image:
https://s017.radikal.ru/i444/1305/e2/6ed0b27ca37c.jpg
p.s. in theme i have 2 php files with screenshots.
single-screenshots.php
and
screenshoots-page.php
i try edit single-screenshots.php
—————————————-
Can I remove the blocks with widgets and stretch the center column to right edge. And not have to scroll through the images. Or is there some plugin that makes the images at not full resolution, and let the size of maybe 100×100, and when opened, the picture opens with Ajax in full resolution.