Cmon, a truly poor sport would lose his stuff and pop off in the media. Nah, this guy has a track record of taking his losses in stride, stewing in private, and then coming back to stun a team that might have throttled his squad only a few weeks beforehand.
IMO, I think that his immediate post-game demeanor after a loss is aimed at his own undermanned team for not battling as hard as he does. When's the last time that he ever trashed another WCC coach or team? Maybe you remember ... I don't.