of LES is after games when fans have stormed the field. It's a tradition. Keep it going. Shouldn't even be a fine.
Also, how were the ASU fans supposed to know the game wasn't over? The refs didn't even know the game wasn't over yet. None of the refs signaled that the game wasn't over. They had to go to review. That's a once in a blue moon event, where the game isn't actually over.