Very interesting moment in the fight. A move of desperation which you usually see from somebody who knows they are losing a fight. So Vlad knew he was losing yet thats the only thing he did to try change the outcome of the fight rather than throw his body on the line and attack with his fists. As for it being a headbutt, so what i doubt Fury is losing any sleep over it, has he even mentioned it? It happens. Id rather somebody headbutting than pretending to be more injured than they are like that puszy last night.
Awful headbutt. He should have had a point taken and warned if he did that again he'd be DQ'd on the spot.