I'm assuming that these folks aren't familiar with snow/ice? Everyone running out on the ice is about the stupidest thing you could do in a situation like this. Especially the guys that ran out and stood right on the edge to watch. Heck nobody should have been out there to begin with as that ice is nowhere thick enough. If somebody does fall in you never walk/run to the edge, you lay down (to spread your weight around) and shimmy. But that's only in the most desperate of situations, the best solution is to throw a rope and stay as far away from the edge as possible.
@2:55 in the BG tho
I'm really surprised that no one died.