Ok here's one for all the simple people. Firstly BA are continuing to train all the cadets who are on courses simply because they are contractually obliged to the flying schools to do so. The cash has already been paid, they're not getting it back, so they might as well get the training from it. Secondly, the reason they send people to the states is because its dirt cheap, not because they want to send people off on a jolly holiday. Thirdly, if they did go in club, so what? A duty travel ticket in club costs the same as one in economy, and they'll only have gone in club because it was empty. If it was full they'd have made that trip in any seat that was going, including cabin crew rest seats, flight deck jumpseats or the fold down crew seats by the bogs.
BTW what exactly is a "stoppage on training"?