Omnicron - Thanks, I had read through the forums and tried a number of things that people suggested, but I've been unable to resolve it, or get the "burned bridges" option to trigger.
Kriber22 - Yes, I believe that's what happened. (When I got stuck, I tackled the Endless Paths, so it's been awhile...)
The devs are obviously aware that there's a problem, hopefully my savegame can help...