I'm going to give an in-game punishment for a (sort of) out of game disagreement.
Why are you going to do that?
It's okay for me, I don't think it's wrong.
Keeping real life and gaming life separate is important. Dragging any real life drama into the game doesn't just ruin the game for those that are fighting, but all of your friends as well. If something happened in real life, talk about it in real life.
It's just a game, I'm not losing money or anything.
I just think it's important to seperate your real life from your gaming life. It sounds like you just need to talk to this person about your issues instead.