VB you are right but those who leave BALPA are falling for the management ploy, which is exactly what they want! BALPA is a long way short of perfect but maybe the new man is going to be better. He certainly couldn't be any worse! He might have integrity.
There is no choice if you want some sort of future. Try negotiating individually some chance! You are being set up and its working. Like it or not you have to work through an organization. The only alternative is some other union but that would be difficult.
However, you may feel unwell at some point!