I have been there with my 4 wheelers and Hell's Revenge is a blast. Hell's gate is very tough and lots of Jeeps have rolled or smashed on their sides. I am surprised he didn't fold in those mirrors.
Here is a video I took when we were at Moab in 2009. These riders are NOT anyone we know. They were just there doing Hell's Gate when we were riding by so we videoed them. It was a rental quad, LOL. A Jeep pulled him out.
I hope I get to Moab soon with my 2014 GC. I will be doing Hell's Revenge again.