A and C, if the recovery contract is for aircraft on the civilian register which will thus be regulated by the CAA, and if necessary to be investigated by the AAIB, then that is indeed a solution that should provide for an early return of Air Cadets to the skies, I agree.
If they are still to be military registered aircraft the problem remains, and I for one cannot see that happening anytime soon, I'm afraid. It is one thing for RAF aircraft operated by Service crews to remain flying, they clearly have to. It is quite another for civilians, especially teenagers, to be exposed to the dangers of present day UK Military Airworthiness.