Ballack should get fined.
Are we talking about the same play? The Barca player jumped and turned his back, not too sure what you mean by why his hand was out there?
I agree on both counts. Ballack was overboard with his protest, and Pique in my mind was rotating out of the way, and the ball struck him on the shoulder/back.
Great determination from Barca with 10 men 11 if you count Essien.