I have heard folks saying they have, I have yet to see a recovered specimen.
Based on the types of lesions exhibited by weakened M. doreensis, I am concerned about the recovery period in the typically provided environments. Would definitely only attempt with large, well established, specimens in a species tank.
I would infer, H. crispa as a better candidate vs M. doreensis based on crispa demonstrating survivability in bleaching, harsh collecting, intake damage, etc.
Either way, all the best, and if you plunge the knife, keep us up to date.
Cheers.