Czech, the issue isn’t what the company can or can’t legally do with its crews. Nor is it the previously-offered written assurance, because we all knew that was never going to be worth the toilet paper it was printed on.
The issue is that once again, the company has shamelessly reneged on a previous undertaking, and thrown in some fairly unsubtle threats about EBAs and future aircraft acquisitions into the bargain. Personally, I’m not that angry, because I really didn’t expect any better.