My friend graduated from Basic Training and is now in AIT training an order of protection was discovered what should he do

He was notified that an Order of Protection against was recently found in a background check. Things have imprvoed with his wife,
should his wife send a copy of the petition to withdraw or the courts' decision to withdraw the order to her husband's commanding officer? Should she contact the CO beforehand to explain what she is going to do? He was told that he may not receive his enlistment bonus and his MOS would have to change.