The action itself is obviously quite dirty. That said, there are times where there are simply no other target showing up (battle finishing) between when you kill a person and when they rez, this is especially true if the server is low population, which yours might be as a single group boycotting sounds like it can kill sage. based on your description of the case, this does not appear to be the case, but rather intentional. Still, just want to put it out there (I have killed the same person 3 times in a row before, I wasn't camping him....)
You can somewhat counter this by exiting the battle field(F5 out at end of the fight) and re-entering it sometime later, hoping the camper is engaged. Problem with this is that it can only be done a limited number of times I believe before the game does not allow you to re-enter (even if you still have morale left)