I think you hit the nail on the head. The judge here is trying to rewrite labor laws. Once the NMB decided that the pilots were one group this should have ended.
Now, the judge MAY declare that USAPA cannot negotiate on it's own behalf. This is purely judicial activism, and I am anxious to see just how he "splits the baby".
Unfortunately, once the NMB decided that the pilots were one group, that group violated labor laws, so it could not have ended.
It should have ended with the conclusion of the Nicolau arbitration, again unfortunately a new union was created that violated labor laws and has been found responsible for doing so.
This judge is not rewriting labor laws, he is enforcing them. That is what judges do. USAPA broke the law, USAPA will be held accountable to the law. Any further denial from the east is plain irrational, and will most likely result in greater harm for themselves.
USAPA can negotiate on its own behalf, noone including this judge is denying that. Fortunatley, that will include the West's behalf. Get it now. Any underhanded "negotiation" on its own behalf that favors the east over the West is unlawful.