I suspect that the legal intricacies of mandating a strike against something that an employer may well be within their rights to impose will be a step too far for the legal beagles in UNITE.
If the ballot is held and the dates agreed then they will be laying themselves open to a massive damages claim if the trial in Feb goes BA's way. And given the unwillingness of today's judge to grant a temporary injunction, I wouldn't get my hopes up of any other outcome.
Come February the new crewing levels will be old hat, a few disciplinaries will have ensured that everyone abides by the new service levels, the PTWs will be settled in, the "working up" Psrs will be enjoying their new pay and the VRs will be enjoying retirement. Not very fertile ground for a call to arms I think!
This will go down in Industrial Relations history as a classic example of how NOT to represent your membership to an employer.