His arm slot is still extremely wonky. He's throwing almost directly three quarters...sometimes even a bit lower (edit: after reading that article he's even lower than I thought). I think he's adjusted to the new arm slot. He's doing what I do for fun with a ping pong ball now...he's throwing three quarters but getting his hand over the ball. When you release the ball it puts spin on it almost like a reverse slider...the ball tails in toward righties HARD. I'm not sure if the new arm slot will cause any injury problems and I haven't seen him pitch enough with it to know if all of his pitches are working consistently with it but I can say that tailing fastball was making the hitters look stupid in the game I watched. It's definitely not how he used to pitch, I'm not sure if the change was due to injury or it was just something that happened, but the movement on that tailing fastball was absolutely filthy.
Hope springs eternal
grows like ivy on the vine
then dies in the fall
--Haiku for a Cubs Fan, The Loveable Losers