Right Sidebar on Front page template of twenty twelve theme

I have a question sort of related to this thread, so I’ll post here. I’d like a right sidebar on the front page template of my twenty twelve child theme, but I don’t need the right sidebar IN ADDITION TO the two widgets down below the main content area. I’d like to relocate one of the two widget areas so that one of them is a sidebar.

I sort of did this by adding the following CSS to my child theme:
#primary {
width:60%;
}

#secondary {
float:right;
clear:none;
width: 38%
}

.template-front-page .site-content article {
width:auto;
}

and it works. However, I’m using the jetpack twitter widget and the widget is stubbornly remaining the wrong size, no matter what I do to resize it. Any idea of how to fix this? For reference, here’s the site: curativeprojects.zippysites.com