Sidebar pushed below content in post

I’m have a blog in WordPress caspost and there is an issue that I just can’t seem to find a fix to:

Basically everything is fine in the posts, but when I try to remove the comments below the post, like the facebook comments box, the side bar is getting pushed off and showing up right down the button of the page.

Any help would be greatly appreciated! A specific solution would be ideal because I’ve already spent a lot of time tinkering with it to try and address the issue.

Thanks in advance for any help!