The only saving grace for this semi flex mess is that I'm finding it nigh on impossible to book a flight anyway, keep being told no availability, then there is, then you click on a date and it shows you availability for a totally different date. So I guess that limits the fallout somewhat.
And now even the way in to the old interface via Google Flights is playing up for me - you go from the GF page to book, and you get a BA holding screen telling you that they are "processing your payment"
Strewth... between this and the BA(E)C debacle, they are going to run out of people to sack...