L337
It has a nice ring, but I for one am not to sure what that means, and can manage to remain within the laws of the land.
It could certainly involve making all existing cabin crew positions redundant and introducing new positions with a different payscale, allowing people to re-apply for these new jobs, which have new T&Cs.
Given (a) the recent volcano induced financial losses and (b) the impact of the ongoing industrial action on the brand (which is getting serious damage), I imagine BA would be able to state quite reasonably that a business crisis forced this action.