I would not, in any circumstances, take the responsibility to tow the RV.
Even the adjuster cannot examine it sufficiently to tell you that it is safe to operate. First and foremost you must stress that it is a safety issue. The adjuster also cannot guarantee that towing it with that level of damage will not cause more damage.
If they tell you to pull it, insist that they provide, in-writing, indemnification for any life-safety issues to you or others on the highway, and also for any further property damage caused by towing it.
You want it either A. Totaled, or 2. Transported on a flatbed back the manufacturer.