You’re allowed to head the ball in football.The rules allow a pen for such a move and I think it's bollocks. It's a reflex move to protect the head… not a conscious attempt to block an attempt on goal (thought we had a discussion about concussions in Teamsports); if his hand hadn't blocked the ball his head had. Kudos to the ref for making the sane decision, I'm sure it's coming back to bite him in the arse.