"Perhaps with all of us working on it we could make somewhere that would hold him?" the Doctor suggested, knowing he was clutching at straws but not having anything better to suggest.
Well, except - "Or, you know, I suppose we could think about maybe some kind of mind control?" He winced and didn't look at any of the others as he said it. "It's hard because we can't do anything that might carry over to the real world, but maybe something to stop him wanting to muck up other people's lives while he's here?"