In the Hallendren court of Gods, the Returned seem to be able to get away with a lot of things without punishment, because it would be rather difficult for the priests to justify disciplining them, I would imagine.
But what if they did something truly horrible? Killing a normal human being would be bad enough, but with their station, they could likely still get away with it. But killing one of their fellow Returned? What would the priests do in such a situation?