Just my opinion, but refusing to negotiate now would play right into the company's hands. According to the law, for the judge to grant the company an 1113 motion to abrogate the contracts, the company must show that it has negotiated in good faith (or has attempted to do so) for concessions and the union has refused the concessions without good reason. If a union has flat refused to negotiate, it would have no argument in court against the 1113.
Now, in truth, the union has little defense against an 1113 anyway, but there is a difference between little and no defense.