His rib cage would also have been hooked by the rock as they tried to pull him back. And they figured the shock of breaking his legs would kill him. Only way he was coming out was in pieces. He was too weak to assist.Question, if pulling him out would break his legs....wouldn't you rather have two broken legs than be dead?
If a drilling rig had magically been in place when he got stuck I wonder if it could drill down to his stuck location in 4-6 hours to extract him? They could have placed a tracker by his feet to determine his exact location.