In effect the crew worked home on their day off, and at present are being told they are not entitled to it back on a later roster.
The very fact that there are many BA crew with attitudes similar to that quoted leads me to believe that they are in for an almighty shock.
PC767 - I think you'll find that the crew didn't consult DoMs or BASSA, they decided like adults that they would be better off getting home. Then they simply operated without fuss.
Some BA crew don't seem to realise they are in the airline industry, they give the impression that they work 3hr shifts in a restaurant with bunks which magically reaches its destination all by itself. "Are you 'flight deck' coming back with us?"
I fear there will be tears in parts of Richmond and Windsor very soon
PS: The vast majority of BA crew are sensible people who realise which side their bread is (thickly) buttered. Then there are some who expect a day off after disruption as if it's their employer's fault there's poor weather...