I wonder if the crash doesn't have at least a little to do with it. My theory: there seem to be more people on SF at any given moment since the crash, as compared to before it. (Of course, I don't know if they're all coming from unique IP addresses--perhaps not.) Maybe the displacement put the SF more into the public eye, since it was visible on AAAC, which I understand to be a far more well known quantity in men's style on the internet. that could cause a disproportionate number of newcomers, some of whom are trolls, others tools. They start out at AAAC, which you can easily find on google, and then come here.
Newcomers are fine (I'm one), but a lot of them at once will tend to upset the chemistry of the board, make it more like a New York street than a comfortable club.
As for a solution, my thinking is that the elders, and I don't just mean the mods, need to maintain a sort of order by gently putting people in their place, suggesting that a hostile post is not "how it's done" at SF. If a comment causes a flame war, then the mods have to step in. In other words, the community needs to guide its younger members before they develop into full on jerks by creating levels of social correction beneath the rather serious measure of "time out."