(I actually became leader of our guild near the beginning of January. The process was smooth and drama-free; the previous leader felt that he was less likely to be able to give lots of time, and thought I was reasonably well-suited for the role. We announced it for a week or so, and then made it so.)
These tales fill me with a grim horror--they remind me of the great icky drama of Imagécastle in December 1994. (I suppose they should also remind me of when I hijacked Imagécastle in the summer of 1993. But the first flinch association is with the later one.)
The thought of such drama in our guild twists up my gut with terror. I think it's unlikely, mind you--we've had very low drama so far. But reading these horror stories still makes me fret about "what would I do?"
Part of me would like to think that I would just walk away and escape the drama and bitterness. Realistically, though, I don't think it's very likely that I would.
Edited to add: the casual, laid-back nature of our guild probably means that we will have trouble developing the drive and organization necessary to do high-end raids like Molten Core or Blackwing Lair. I feel curious about that endgame stuff, but that's probably a satisfactory tradeoff.