Capewell is correct, although this type of petty, vindictive, small minded and provocative sanction by BA has not yet been fully tested in the UK Courts. The nasty scheduling tricks and the pay deductions, and the cheap flight nasties all need to be tested. A field day for BALPA's barristers!
I do not see the BALPA action of calling off a single strike day, as bottling it. Rather, I see it as a cunning plan.
Crew scheduling will have all their nasty scheduling tricks to unwind.