Ajax and Alkmaar: Match abandoned after a bizarre incident

This soccer match was abandoned in 36 minutes. The Goalkeeper was redcarded for what????. A crazy hooligan was running towards him, what should he be doing be kind to him or ignore him. It is obvious that the the goalie put out all his frustration on the hooligan but he doesnt deserve a red card for that.The ref was so unkind to punish him for beating up a hooligan.People get away with a lot in Soccer but this Goalie did no wrong.....