Camper_Jeff_&_Kelli,
That video is of Mello Mike and myself climbing Murphy Hogback, I did the videoing and Mike edited it. This was Mike's first time on the WRT and my 4th.
Max width for a camper based on experience is 87 inches without the camper jacks. The reason for this width is that there are some rock outcropping 7-10 high that you'll have to get pass. Otherwise, you could do a good portion of this trail and exit the way you came in.
If you have questions PM me, I'll be glad to help.