If you resigned due to the other pilots verbal abuse, he succeeded in his goal. Why else would he yell at someone if not to discourage them from being a participant?
Unfortunately there is a major attitude problem that plagues a lot of AMA clubs. Our only options are to attempt to get things restructured from the inside, or start anew from the outside.
I would have apologized to the other pilot (before any verbal abuse), but otherwise I would have told him that if he wants to be a 5 year-old about it, he could go home and fly some paper airplanes.