Temp should have attempted to fight, he didn't. Ya, generally ramming is looked down upon, but there is a time and place for everything I guess. That temp had no intention of fighting despite the fact shane had no ammo, despite the fact he is leaking oil, despite the fact niki in area, despite the fact shane gaining on him. Actually, shanes risky attempt to ram is the only chance that the temp had of getting a kill on shane...he's actually giving him the temp a chance to "win" a fight. If he had ammo left, outcome would have been the same anyway.