Maybe they thought that having it all unnaturally pointing would ruin a bit of the "effect of the pic. If the guy were a person his hair would never hold like that for very long.
Love the bad ass stance been one of my faves for quite some time.
I don't think his hair is 'holding' at all, from the looks of it I think it's supposed to be flapping in the wind or something, like at the beginning of the Calamity Trigger opening.