Fortunately in this country we have laws and are not governed by the logic of WFR8 and IFlyer. No judge will do this...no judge will say that. Lets ask a judge and find out.
Unfortunately, both CBA's have arbitration clauses in them. A judge would only defer back to arbitration after everyone spent the money going through the steps to get into court.
The best you will get is another arbiter or the same one addressing his past judgment. I think the arbiter in question even padded his pocket book by making the decision the way he did, knowing that further work would be needed on his judgment expanding his billable hours.
Arbiters know what side their bread is buttered on and why they generally don't make overly impairing rulings against a company.