From what I've seen from the argument @Tatost presented, it clearly shows Crow being extremely hostile. However, I must admit, arguing back with him in a matched hostile manner at first definitely didn't help the situation. I feel as though people need to keep their cool when enforcing rules, otherwise it escalates the situation when it's not necessary. I understand it can be frustrating sometimes, but keeping a level head gives you the upper hand if some kind of ban request (or something similar) were to come of it.
I would like to see further evidence before providing a vouch, though I feel as though some form of action should be taken, should further evidence be shown.
Please remember to include evidence in the original post in the future.