Everyones body responds differently to coming back from a mission. I'm not 6'10", 250 so I'm not going to pretend like I know how his should respond. He didn't have the same amount of time as alot of the returning guys now have to get in shape. Plus he's a bigger dude.
Its obvious he has skill, wish he would have played more this year to get freshman mistake out of his system and to learn, but we may see some of that again next season even given the fact he barely plays this year.