For argument's sake, I'm going to play devil's advocate.
The poor guy is sitting in the stands watching his beloved Saints getting their asses handed to him and he's probably had to listen to Bengal fans whooping it up all afternoon. At some point bitterness & pettiness set in and the dude wasn't having it anymore. If he wasn't happy a Bengals fan damn sure wasn't going to be happy either.
Women always complain about equality. Well the guy gave her an equality lesson in sports stadium decorum. Snatched that ball from her as if she were a grown man.
As Chris Rock would say, I'm not saying he was right, but I understand.