He's made it clear why he wants out.
Lt. Ehren Watada of the Stryker Brigade writes, "I refuse to be silent any longer. I refuse to watch families torn apart, while the President tells us to ‘stay the course.’ I refuse to be party to an illegal and immoral war against people who did nothing to deserve our aggression.
He's a coward at best. A traitor at worst.
Or more likely, just another loser who signs up with the military for the bennies without any intention of actually "serving".