I hope it's simply the grip that's giving him that added movement. I posted in the game thread that his slider reminds me of the one he had his rookie year-- the one that also helped to blow out his elbow because of the tremendous strain it put on it. I hope he's not putting that kind of tourque on his elbow again.
Some of his pitches have that nastiness to them that he had his rookie year. That one pitch to strike out Young in the 9th the other day was eerily reminicent of the 20th strikeout pitch.