<i>The details aren’t important</i><p>I disagree. You don't have to name names, but it's hard for me to draw any lessons from your post without knowing specifically what happened. I mean, right now, all I have is your word that this person became hostile and was a jerk. From my perspective, it's your word against his, and you're basically saying, "Trust me, this guy was a total jerk." Well, it's hard for me to believe you without your saying what sort of actions this person took to be a jerk.