Sidebar not showing correctly on comment page

Hello!

Please have a look at the site: https://www.fan-sites.org/audrey-tautou/?p=45#comments

This is one of the comment pages of my site – as you can see, the sidebar does not show up correctly. I have no idea what the problem is, so please help me!

This is the Comments Template, where is the mistake? Did I put the get_sidebar in the wrong place?

<?php // Do not delete these lines<br />
if ('comments.php' == basename($_SERVER['SCRIPT_FILENAME']))<br />
die ('Please do not load this page directly. Thanks!');

if (!empty($post->post_password)) { // if there's a password<br />
if ($_COOKIE['wp-postpass_' . COOKIEHASH] != $post->post_password) { // and it doesn't match the cookie<br />
?>

<p class="nocomments"><?php _e("This post is password protected. Enter the password to view comments."); ?>

<?php<br />
return;<br />
}<br />
}

/* This variable is for alternating comment background */<br />
$oddcomment = 'alt';<br />
?>

<!-- You can start editing here. -->

<?php if ($comments) : ?><br />
<h2 class="pagetitle"><?php comments_number('No Responses', 'One Response', '% Responses' );?> to “<?php the_title(); ?>”</h2>

<ol class="commentlist">

<?php foreach ($comments as $comment) : ?>

<div class="<?php echo $oddcomment; ?>" id="comment-<?php comment_ID() ?>"><br />
<?php comment_author_link() ?> says:<br />
<?php if ($comment->comment_approved == '0') : ?><br />
<em>Your comment is awaiting moderation.</em><br />
<?php endif; ?><br />

<small class="commentmetadata"><a>" title=""><?php comment_date('F jS, Y') ?> at <?php comment_time() ?></a> <?php edit_comment_link('','',''); ?></small>

<?php comment_text() ?>

</div>

<?php endforeach; /* end for each comment */ ?>

<?php else : // this is displayed if there are no comments so far ?>

<?php if ('open' == $post-> comment_status) : ?><br />
<!-- If comments are open, but there are no comments. -->

<?php else : // comments are closed ?><br />
<!-- If comments are closed. --><br />
<p class="nocomments">Comments are closed.

<?php endif; ?><br />
<?php endif; ?>

<?php if ('open' == $post-> comment_status) : ?>

<br>

<h2 class="pagetitle">Thanks for your feedback!</h2>

<div class="comments"><?php if ( get_option('comment_registration') &&amp; !$user_ID ) : ?><br />
You must be <a>/wp-login.php?redirect_to=<?php the_permalink(); ?>">logged in</a> to post a comment.<br />
<?php else : ?>

<form action="<?php echo get_option('siteurl'); ?>/wp-comments-post.php" method="post" id="commentform">

<?php if ( $user_ID ) : ?>

<?php else : ?>

<input type="text" name="author" id="author" value="<?php echo $comment_author; ?>" size="25" tabindex="1" /><br />
<label for="author"><small>Name <?php if ($req) _e('(required)'); ?></small></label>

<input type="text" name="email" id="email" value="<?php echo $comment_author_email; ?>" size="25" tabindex="2" /><br />
<label for="email"><small>Mail (will not be published) <?php if ($req) _e('(required)'); ?></small></label>

<input type="text" name="url" id="url" value="<?php echo $comment_author_url; ?>" size="25" tabindex="3" /><br />
<label for="url"><small>Website</small></label>

<?php endif; ?>

<!--<small><strong>XHTML:</strong> You can use these tags: <?php echo allowed_tags(); ?></small>-->

<textarea name="comment" id="comment" cols="5" rows="6" tabindex="4"></textarea>

<input name="submit" type="submit" id="submit" tabindex="5" value="Submit Comment" /><br />
<input type="hidden" name="comment_post_ID" value="<?php echo $id; ?>" />

<?php do_action('comment_form', $post->ID); ?>

</form><br />
</div>

<p style="margin-left: 10px"><a href="history.back(-1);">Back</a>

<br>

<?php get_sidebar(); ?>

<?php endif; // If registration required and not logged in ?>

<?php endif; // if you delete this the sky will fall on your head ?>

Thanks in advance
~ Manila