Let's not kid ourselves by believing that GoJet "lost" the suit. They sent the message out to 600 pilots and another 700 or so FAs that if you take FMLA leave that you might not be coming back. So GJ saves some money there. And GJ sent the message out that if you try to enforce the contract they will terminate you and there is not one thing the "Union" can do to help. So they will save a lot of money there. And then there is what seems to be their practice of firing employees who have expensive medical issues. They may have lost a little on this one but they come out ahead if you take them all into consideration.
So I am congratulating GoJet for their overall victory. Nothing that happened stops them from saving more money in the future using these methods.