micmeister,you saw the video of him hitting and some times(most of the time) he gets to full extension,other times he doesn't.
He doesn't always take his hand off the bat as he is doing in this picture.It seems to be a feel thing for him.
I would quess that in the second picture he was arm barring real bad because he has started doing that in the last few weaks but I am not worried because he has done it right enough for me to know he is getting it.
Remember,this is hitting off a machine where he can sit dead ready for a certain pitch and hit it hard.
For those that missed it.
http://youtube.com/watch?v=Q7aE2HpzIF4He was actually hitting the ball real well when the first pic was taken but he was just floating the ball into the outfield.Now,he is crushing the ball and hitting line drives.