Fan Gets on the Ice and Starts Throwing

I've gotta ask the obvious question. How did this kid not get absolutely destroyed? I mean have you ever tried standing on an ice rink in shoes? It's f'n impossible. The only way you even have a chance is if you do the coach's shuffle they use to get to and from the bench between periods and even then you'd be lucky to not bust your ass. Add throwing haymakers to the equation and you've got no chance. But somehow this kid tip-toes around the linesman, who sucks at his job btw, and starts landing blows. Totally defied the odds. Oh, and there's a chick out there too? Jeez, flippin bizarro world.