Mark and Barb decided to resolve a contract dispute through binding arbitration. They selected their arbitrator, Alan, through a private service. At the conclusion of the arbitration hearing, Alan returned an award for Mark. The next day, Barb found out from a neighbor of Mark’s that Mark and Alan had been business partners five years ago. Neither Mark nor Alan mentioned that they knew one another. Barb also thinks that Alan miscalculated the $10,000 damage award to Mark. Upon learning of Mark and Alan’s connection and upset over the alleged miscalculation, Barb immediately consults with an attorney as to her options. What, if anything, can Barb do? Explain.