> and wanting the forum to prevent it happening through the forum again
He did not break the rules of this forum.
Based on the known, can be said that you both had common Internet quarrel, where no one had real problems. You need be more patient to Internet communication, - it's far not the same when you communicate IRL with dudes near you. When you dislike someone's actions - try to be polite (to keep own nerves cool), and just add him to ignore or don't read him.
LIE would did such and have forgotten about the situation.