Not later than 15 days after finding that the statutory grounds set forth in the petition are or are not proved, the court may upon its own initiative order a new trial for any reason for which it might have granted a new trial on a motion. After giving appropriate notice and an opportunity to be heard, the court may grant a motion for a new trial, timely served, for reasons not stated in the motion. In either case, the court shall specify in the order the basis for ordering a new trial.
Minn. Juve. Prot. P. 21.02