Either way, a chance to play them on multiplayer would be awesome! Can you vote the maps or does it have to be set by you guys? I mean, then if some idiots come and change the map, that would suck.
The two can't be voted in, but if they're voted out, the server should revert back to them at the end of the round. Clan admins can be reached pretty easily over IRC, though. Just connect from http://ircwarband.com/. Regular admins can't switch to the hidden scenes either, though, so if you for some reason can't wait until the end of the round, you'll need to reach Yoshiboy, specifically.
I'll warn you now. It isn't pretty. The server throws A LOT of assertion errors. You gotta be constantly on the ball to keep pressing "ignore" or the users get disconnected.