I thought about a conventional control system, elevator with trim tab with its separate control, not spring or jackscrew.
I practiced a lot of trim + power landings in a Cessna, I would say it's pretty manageable, at least to get you safely on ground, if not even the airplane intact. You have chances to brake the nosewheel, propeller, but at least you won't be fatal injured, I think in such a rare and critical situation, yours and passengers safety is the first thing despite the airplane might be demolished.
If hinges are not broken, the only two possibilities I imagine, not sure if likely to happen, just thinking about them, are either the surface vibrates, oscillates (maybe from stop to stop) and eventually, finally jams in an unfair position to recover with the remaining controls or when one componnent from the flight control systems broke, e.g. pulley, pushrod, the break reaction effect might slam the surface in an extreme position, however, don't have enough knowledge about how flt control system componnents are rigged if it would be possible to slam so when it breaks. What do you think?