If I had the mechanical ability, I'd consider a complete dissemble. The appliances can be set aside, possibly sold or reused as spares. The walls can be used for something or just sold as scrap. The insulation and junk inside would need a dumpster, and the frame of the TT can always be repurposed or just sold as a bare trailer or hauled to a recycling place for scrap.
I would never let people "pick and pull". Far better just to offer it on freecycle or CL for a nominal fee (free, people don't bother for some odd reason.)
Then check with an accountant -- you might be able to write the rig off your taxes as a loss.