I don't disagree with what you are saying, but you are really missing the point here. This wasn't a fight between 2 adults who should know better. That was a sneak attack by 2 individuals on another followed by a felonious kick to the head, while the other guy was down.
It's not just about stupidity. It's about a cowardly attack by 2 people on another.....regardless of the color of their jerseys, I'd say the same thing.
I have been to several games at the Meadowlands, and while I've never been attacked myself, I've heard some horror stories. Sadly there used to be a similar element in Foxboro at the old stadium. However over the years, Kraft has worked hard to root out that crowd....and we are a lot better for it.
Your management would be wise to do the same thing. If a clip like this happened at Gillette, that coward would be identified and barred from ever getting into a home game again. If he were a season ticket holder, he would lose them. That simple.