The post display issue is caused by pasting text from Word into the post editor. Word generates a lot of garbage HTML that the editor is preserving on input. That garbage HTML is then messing up the way the post is displayed in your browser.

This is only an issue in IE, oddly enough. Firefox and Safari are fine based on my testing.

I've edited the offending posts on the last couple pages of the topic, so they should display normally now. All I can ask for the moment until I can find a fix is that people not write up their posts in Word first.