Quote Originally Posted by Gethyn View Post
If they're concerned about the 15 minute lock out, just wait them out. They'll get antsy and hopefully leave, and you can replace them in the party.

It's unfortunate that people choose to act this way, but the best thing to do is not give in to their demands of leaving, or get upset.
Well that won't help when they're willing to wait out 30 minutes and longer. By the time they leave at that point there is not enough time to finish the dungeon.