Was that a "Mac Genius" doing that? He actually used a bit more silicone then needed and unless something changed since I've done hardware work you're really not supposed to keep lifting the heat sync like that. Good luck with that repair and thanks for sharing the video.
I just had a chance to try it this weekend. It's working the way it's supposed to. For me the 10.5.1 update broke Back To My Mac, now things seem to be fixed under 10.5.2