BASSA aren't negotiating anything! The company is willing to discuss new fleet and new contract, hardly a surprise there, but BASSA are saying that they can't negotiate anything unless the subject of redundancy is discussed first. BASSA do not run the company, they do not lead and demand in negotiations and they do nothing for their membership.
How odd, that BASSA initially refused to discuss 'anything' as the state of the company was one big ruse, then the company files paperwork to make 2000 jobs (not people, jobs) redundant and BASSA can't discuss anything else apart from this 'grave threat'?
What part of the word 'imposition' don't BASSA understand?
Discuss it now, reach an agreement which benefits your membership and then stick to it. The consequences of doing nothing could be far worse.