I think you may be onto something Pokergirl, If the company(virgin) are not intending to axe the FSM role then they will have no qualms into entering into a deal with the union. Currently at my airline our union faught and secured a "no compulsory redundancies till nov 09" (to much stamping and dummy throwing at Tui towers) but if Virgin have no intention of axing your role then it would be a simple paper excercise which would help quite a few FSM's and (near promotion) CSS's get on with their lives.
Maybe something to put towards your union reps?