If the RAF took the line of "failed to meet required standard" then all these chaps would be very happy as it wouldn't take a tribunal long to discover that this was not the case, and they'd be back flying or with a very hefty payout.
Sadly, I'm not sure if there will be any suitable legal course as it's down to service need.
You all are the victims of some terrible decisions by people who are not affected and may have moved on some time ago. The only real positive out of this is those of us lucky enough to be doing the job should feel very lucky (perhaps we haven't of late) and maybe not be so quick to complain.
Good luck to you and all your peers.