In one sense, the number voting Yes is not surprising. The 5,000 odd crew who did go on strike don't have much to lose by voting Yes again. Add in the regular empty promises and you get your Yes vote.
That said, it is disappointing that Keith Williams' gesture in paying the bonuses to strikers (and the departure of WW to IAG) has had no effect. Nor has any loss of credibility in connection with the last failed ballot.
If crew have been conditioned to believe that BASSA is the sole source of the truth and everything BA does is part of a sinister plot to crush BASSA and crew then little can be done to turn this around.
Also, sadly, if the claim that the PCCC has 200 members is true then I'm sorry to say but I think the ship has sailed as far as establishing it as a credible alternative to BASSA.