Well if we are getting into theories that are way out there..
What if Miranda, being able to sense everyone's status and all, came into a new power that could save them all. I don't really know what it'd be, but honestly I just wanna see more of Miranda.
However, I agree with Asura that'd be a real suprise (and a nice one at that) if the characters managed to escape without anyone powering up. I also like the idea that maybe once Tiki is down he would revert back to "white" Tiki and do something with his last once of strength to save them.