BR is an SA region, eh? Interesting; I figured it would be some Lurian religion. Yeah, you won't be able to use those religious options unless you get an Elder on your side, someone willing to potentially take a bullet. What you need is for Allison Kabrinski to still be an Elder 
As I recall, Abbigal was a friend of Allison.
Honestly though, it seems to me that the best option is just to get Morek to come and burn BR to the ground.
I also like Chenier's infrastructure-overload idea. I can imagien the fury of a lord waking up to find that the rulers of the realm are stationing a permanent army in his city which he is expected to feed, supply, and pay.
But that wouldn't actually rogue the region or drive him out would it?
