His wife didn't see what happened, but we do know he hated bob before this spat and according to his wife has a tendency to be dramatic. It was a nudging match between two adults playing drinking games. Clearly he fell and it got out of control but it's unlikely he was a completely innocent bystander. Guy who pushed him was willing to apologize and everyone was trying to deescalate, that is besides him.

Not saying the push guy isn't a complete asshat. But if husband had such a big problem with him he should have left and wife could have supported by leaving with him. Throwing a fit that no one is on his side, when the push guy was in fact kicked out is just keeping the drama going.

Part of being an adult is handling situations, even when your in the right, like an adult. He is handling the thing very immaturely in my opinion.