Perhaps folks just took Mel's barbs a little too seriously - as did he, in regards to the arrows slung at him. (And I'd say the same about those who have a problem with Pat as well, except that I know Pat laughs when others sling arrows at him.)
This whole site illustrates the difficulties in communication and interaction we have throughout life. Folks give others they know the benefit of the doubt, while condemning those they don't know. The same thing happens on here - I repeatedly read the same people who had major problems with Mel doing many of the same things with other posters, yet when they do it, they expect it to be simply taken as a joke. Splinters, beams, eyes and all that good stuff...
I don't know what the answer is, but I generally don't think it's banning anyone, nor do I think it's people banning themselves (there are exceptions, of course). I am thankful Dan King has posted on this thread, every thing he says makes me think and usually nod my head in agreement, and I am greatly greatly saddened that I don't get to interact with Huck or others who have stepped out on a regular basis anymore. I understand the decision, but I don't have to like it.