A couple of observations:
1. Reports are that the employees who felt pressured, filed AIR21 Whistleblower Complaints.
All investigations, protections and remedies will come from these complaints. There is no need to file a lawsuit on these points.
2. By not filing for relief on accusations of pressure from management on maintenance issues, Seham and the local don't have to prove it. The AIR21 investigations will do all the leg work on that.
3. The lawsuit appears to be only on alleged violations of the RLA, not maintenance issues.