Actually I thought he showed exactly the contrary. He tried to do the whole floater thing (in attempts to copy CP3), and failed miserably every time. At one point I remember seeing LeBron watch Boobie go up for a floater, and he immediately crashed the board because he knew a miss was coming, and went to scoop it up and throw it down. So it did turn out to be a good play in the end... but for the wrong reasons. He anticipated the miss because he saw each one of the floaters before that clang off the front of the rim...
Confidence was a huge factor for Boobie, his thunder was stolen when we got Mo, and he turned into what Boobie was supposed to be, and I don't think that he's going to recover...
His second year injuries really set him back. I hope he can rebound but he's not really in the environment to do so when you have Mo Williams and Delonte West in front of you.
So if you can convince Sacramento to take the future Mo Williams for Garcia, please do! Garcia would be a perfect backup wing. It all depends on how bad Beno Udrih is.