When you talked to him, Patriarch stopped before saying anything about what happened to Maxos, but kind of implied things didn't go so well. If Patriarch was going to do anything, you'd think he would have acted before all of the other dragons and all but one of the dragon knights were wiped out.
The most logical way to escape would probably be for Zandalor to realize things didn't go as planned when Damian and Ygerna take out the fjords harbour, and come looking for you (his buddy in the ministry being an expert at searching through other dimensions). It is possible the Divine and dragon knight could combine their abilities to escape, but however arrogant the badguys may be, it seems unlikely Damian could trap the Divine for so long and Ygerna get herself resurrected, but combined they fail to anticipate a joint effort in breaking out.
Perhaps ZixZax finally gets the teleporter stones back, and tracks down the Divine for an update?
ZixZax showed up in the first game, Divine Divinity, to talk to the character (destined to become the Divine One) and temporarily 'borrowed' his teleporter stones (similar to the dragon stone, but you could place one wherever you wished to set up a home base, or keep both with you to get in or out of anyplace you could toss one of them).
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