Murder is the unlawful killing of another human being with "malice aforethought", and generally this state of mind distinguishes murder from other forms of unlawful homicide
Therefore not a murderer, although what he done was wrong and i wouldn't want him playing for us that's for sure.
Also on the topic of idiots in H block, i have sat in the family stand and H block on various occasions over the past 5 years and it seems weird that the kids in FS know a darn sight more than some of the pricks in H that seem intent to just shout abuse at anybody, mostly Brighton players and the ref, just for the sake of looking 'ard!