Looks like they finally fixed the bug where the "Related Videos" popped up before the embedded videos ended. This happened sometime in the last couple of hours, and hopefully will remain fixed.
You may have noticed the "Related Videos" popping up just before the videos end here on WTFBBQ.... it's not just this site, but every site with YouTube videos embedded. It seems that some time yesterday, they changed the code slightly to do this. Worse, the longer the video, the longer the popup appears at the end of the video (as much as 50+ seconds on a ten minute video). This is frustrating, to say the least. I've posted a note in their help forums, and hopefully, we'll get some answers. I don't have a problem with YouTube asserting some sort of presence on embedded videos, but not at the expense of the video itself (putting something in front of a video is OK, as long as it's limited). Seriously... I don't understand the need for them to do this. I hope they "fix" this issue soon.