Bassa should be ashamed of their actions. They responded to BA's admittedly ambitious proposals, not by using them a starting point together with their own (sensible) suggestions, but by wasting everyone's time on a bunch of off the wall proposals that were never going to be worth 5 minutes serious consideration.
If they were my reps I'd be on the phone asking what they were playing at - this is serious stuff and Bassa's sense of self importance is no longer relevant. The terms and conditions of its members are more important than Bassa's ability to dictate how IFS is run on a day to day basis, since WW has made it plain that the union's days of unrestricted power over IFS managers are over. Bassa should realise that and concentrate on its immediate priority - extracting some sort of reasonable working contract for its members.