Craig: Surely you're aware of Md.Code Ann, Cts & Jud Proc, section 3-224 providing 90 days for a dissatisfied party to file an appeal from a binding arbitration decision to a Maryland Circuit Court based on a host of possible claims against the arbitrator's handling of the proceeding.
The above assumes the arbitration has been brought under the Maryland Uniform Arbitration Act. If it has been brought under Federal arbitration law, a similar appeal tract would be available.
The likelihood of success on appeal would be very low, but the delay factor would be very real.