I'm an old curmudgeon and I figure he deserved it. As far as the kids are concerned if I would have happened upon a beat-down like that with my kids I would have explained that actions have consequences and the recipient of the "corrective action" brought it upon himself. I always told my kids, when they were trying to decide if rules should be bent, ask yourself, "What will this cost me?" I guess this dude will most likely never forget the cost of his actions!