In any of the following cases, the Superior Court of Guam may make an order vacating the award upon the application of any party to the arbitration:
(a) Where the award was procured by corruption, fraud or undue means;

(b) Where there was corruption in any of the arbitrators;

(c) Where the arbitrators exceeded their powers and the award cannot be corrected without affecting the merits of the decision upon the contro- versy submitted; or
(d) Where the rights of such party were substantially prejudiced by the refusal of the arbitrators to postpone the hearing upon sufficient cause being shown therefore or by the refusal of the arbitrators to hear evidence material to the controversy or by other conduct of the arbitrators contrary to the provisions of this chapter. Where an award is vacated, the court shall direct a re-hearing by the arbitrators, or if the court deems it appropriate, shall direct the parties to select new arbitrators for another arbitration proceeding.