The vid above looks fake to me, I doubt that kinda stuff would work.
Anyway, I didn't really know the guy you're talking about. Did he use his own music in his vids? If yes, there's the possibility that WMG got him - they're really, really strict about copyright. My favourite LP'er, Chainfire9001, had quite a few vids muted just seconds after he posted them, because he used a song copyrighted by WMG, and I've heard of people getting suspended for the same reason.