I am afraid capn is right. The williams kid is the real deal. He had was averaging 8.5 pts, 2.5 blks and 4.5 rebs in 16 minutes a game coming into tonights action. So this was far from one game.
Also remember that Kidd is an expert at getting the ball to players for wideopen layups/dunks.
Williams will have plenty of down nights, but he should be owned in all roto formats.