He lost control of the dribble and Pierce reached...kinda like this thread and all the posters in it are reaching. Play some basketball and then tell me if you're still impressed by someone who's reaching on defense and the ballhandler just walking by you.
But they'll say you're just saying that cause you're a Boston fan. That's what I saw too. He obviously got Pierce, there's no debating. But it wasn't like he completely faked him out or anything. He leaned forward and lost his balance. DAMN! HIS CAREER IS OVER!