It may be worthwhile to seek independent Counsel opinion and present it to both parties, thereby hoping that good sense prevails.
Good sense would suggest that the BMICC should have engaged independent counsel as soon as they were aware of the likelihood of a takeover rather than leaving it to the last minute. If they did this then it was probably a good move.
The trouble is that if they haven't done it by now, BA are not going to halt the integration process to give them a chance to put their house in order. They can't afford to prolong BMI's losses.
I also see the BMI pilots being presented with a fait accompli.