Scoobs, 016_FSM and anyone else with influence over crew: don't leave the Union! Unite is the only union empowered to negotiate for Virgin CC. If you leave the Union, you forfeit your right to have a say in any future negotiations and you become a spectator only. You are right to be angry with the Union, but you should focus that anger into getting things changed within the Union itself - starting with Brian Boyd as your chief negotiator, and rapidly followed by the fractious, infighting, unfocussed and disloyal committee of your colleagues who did so much to undermine the Union, the Crew and the Company.
As for separate negotiations for CSSs and FSMs, that requires the Company to accept that they are a separate working group with different representative needs. When the Company went through the process that resulted in the CC becoming unionised, that point was raised and rejected. I'm not sure how it'd go down now, but you need to look carefully into the legalities and ramifications. It may be that union representation would not have been possible had the CC not been treated as a single workgroup, and it may be that that hasn't changed.
01noFun and thebigcheese your Union lost because it was disorganised, unfocussed and failed to communicate its aims from the strike - not to mention that it totally failed to understand what it was you wanted! Blaming individuals for having no faith in the proposed action and choosing (as is their right) not to take part is missing the point spectacularly, and profits no-one.