Suffice it to say, this was the wrong move. Almost immediately after, the priest became hostile. Instead of him dying to our attacks he just Tebowed instead. He spoke friendly, but the red dot remained on my navigation bar. When I got to fort DG, he again became hostile to everyone & went right back to Tebowing after we all Rodney Kinged him.
Any fix? Or this going to be the Skyrim bug fix-all, "load an earlier save" answer I'm so 'fond' of...