bing, bang, boom
Did you see the photos? The engine was 300' above the rest of it. A body would have been in smaller pieces. Ants, birds and various critters would have left nothing in a week or so. He didn't take a parachute according to the ranch staff. Real hard for a 60 year old to get out the door of a flying aircraft anyway.
You have to admire a guy who took those risks when he could have sat at home counting his money. He died doing what he liked best and it sure beats dying in a hospital with tubes and lawyers.