If Lott does stay as Leader, it'll be on some kind of probationary terms. Step out of line one more time and he's out. Lott spent whatever political capital that he had, and his credit limit is now 0.
I just can't see doomsday scenarios with Lott still in charge. The only thing that Lott can do is become a "suicide bomber" and choose to take such a horrendous action as to destroy everyone associated with him in one blaze of glory. That kind of narcissism I would have expected from Clinton, not Lott.
-PJ