Perhaps this has been implemented since this this thread was started, but maybe an "undo" function for super-admins would be warrented here, or at least a way to see exactly who was kicked (or who deleted posts or threads, etc.) so they could be re-invited in case a rogue admin gets destructive.
It is hard to get to know people and track them (their mental states anyways) online, but just as a CEO can reverse decisions of a VP or other administrative staff, it seems viable that a super-admin could do the same in a group he built/"owned", espeically a larger group that he has spent considerable time and effort bulding and maintaining.
Yeah, it's so hard to become an admin that many teams have no active admin at all. The members of those groups have no chance to play in matches or vote chess games. This is especially vexing when the group has signed up for an intergroup team match tournament like the World League, and the players want to play, but there is no one there to send or accept the challenges. Some of these leaderless teams are huge with lots of active players who could easily take over the reins if only they'd been invited before the admins went awol. Not only are the members of the team deprived of a chance to play, but also all their opponents in the team matches.