tsuwm sez: "QED, we must fault them for leaving, or they weren't really good people."
I'm not into ascribing fault to anybody who decides that the good they get from participating in this board is outweighed by the aggravation. I did that once myself, a few years ago.
I am not into judging whether people who elect to leave are "good" or not. Remember, I only judge things that I get PAID to judge.
I am convinced, based on my reading of experts about flame wars and trolling and such, that there are only two likely outcomes: (1) the people ignore the offender, who eventually tires of the enterprise and withdraws, or (2) the people leave the board in sufficient numbers that it is destroyed. People who study the lives of boards such as this one suggest that there are not other realistic outcomes, for an unmoderated board.
