Let's go back to that Telegraph article for a minute.
This caught my eye
withdrawing goodwill - such as turning up early for pre-flight briefings.
Now, I don't know what the actual requirement is in their contracts but surely turning up for pre-flight briefings would be a mandatory requirement so they, the cabin crew, would know of anything "unusual" on their flight.
Was that just a bit of "journalistic licence" or is that an actual proposal from some Bassamaniac and would such an action lead to disciplinary action due to any failure to attend the briefing?
Another route that could lead to is directly into BA's hands. You don't turn up for the briefing, you don't fly, you don't get paid, you are deemed to be "on strike" and if that strike is unprotected then you better hope McDonalds are hiring...........