Since we had both DeRolue and the priest in our wagon I think we have to go with "Thok" kidnapping both. The priest might be aware that DeRolue was there with him. Did we ever say we gagged them? Would they have had a chance to talk to each other at all (I don't remember if anyone was riding in the back with them).
While Russk is against the idea of basically murdering DeRolue, he also isn't very sure that we could trust him to not ever tell anyone about our part in this. He's not going to be the one to do the deed, and he's not going to be particularly happy about it, but he won't stand in your way if that's what the group has decided.
Keeping some article of bloody clothing is probably a good idea, since some guard had to have seen him that morning as he went to the stables, which would help verify the kidnap story.
Agreed that we should question the priest (as if we actually had rescued him) to see what he knows, and then let him go.
