It seems to me that there is a simple answer to the authorities' dilemma. All they need to do is send a couple of those strange (young ??? ) men in grey suits and EXACTLY 1/4" haircuts to knock on his cell door with a copy of the Book of Mormon. Within a second or two he would be rendered unconscious, swiftly followed by death from terminal boredom. Simple, effective and very, very cheap.

The two young men? No effect, they would still be droning on as the body was removed, not stopping until they were returned to their hole in the salt. As we say over here 'simples'.

No apologies extended.