I think that is one I listened to on audiobook. It is not mormon. The guy was a minister. I wasn't all that impressed with it honestly. Most of the time was spent on his recovery and all that went with his long, long, recovery. I didn't learn anything new about heaven except the pearly gates. Yeah, he said there are pearly gates.
Sounds more like his brain was wiggin out while he was under..... i could be wrong, havent read it. Ive heard scientists explain that out of body experiences are actually brain signals not being sent correctly.