Joe did get Headbutted. BUT, Joe was instigating it! HE even said in the HoH that if you want Willie to hit you, go mess with him.. he's fuming. In the rule-book of BB (as stated by previous hgs) The person instigating the fight or provoked would also be removed. EVEN in the real world.. He would have been arrested as well for trying to start the fight.
Joe also, is a big mouth pussy! I hate him. He should have WENT with Willie. HE WAS FOLLOWING Willie, to the back room to fight ..
