I can also add, since I was the one pulling him, there was no jerking involved. We were using a tow strap, not a chain. All the sudden, people yelled, "Stop," and the bumper was pulled down.

On Jim's bumper, the front bolts pulled out of the frame horn.

As those of you who were there know, I used my winch more times than I can count that day. My Shrock bumper didn't move. I also banged the hell out of it climbing up those two rock faces...still it did not move.