I imagine that there will be long conversations between Unite FTO's and BASSA reps, if the courts rule in their favour.
Normally, a business threatens job cut because of reduced work, unions don't agree etc etc etc and sometimes a strike happens.
In this case, the job reduction has happened and the headcount has already been reduced. However, the fear of New Fleet is still there and BA will be probably be liable for all that crew down money. You could use BA's words back at them to say no existing crew will be affected but ask for guarantees that existing levels of total pay will be maintained.
Hey, but that is negotiation. If Mr Walsh does not engage then, it is purely Union busting. If Unite pursue reinstatement of all pre imposition conditions, then it will be SOSR/90 day contract and recognition agreement notice at God knows what will be left in the end.