Article 43 – Technical Superiority Except from the fall and the disqualification, the bout must be stopped before the end of regular time when: - There are 8 points difference in Greco Roman style and 10 points difference in Freestyle between the wrestlers The bout may not be interrupted to declare the winner by technical superiority until the action is completed (see article 27).
Article 27 – End of the Bout The bout ends either when a fall, a disqualification by injury of one of the opponents are declared, or at the end of the regular time. A match ends by technical superiority (8 points difference in Greco Roman wrestling and 10 points difference in Freestyle and Women’s wrestling). When a wrestler scores 8 points more than his opponent in Greco-Roman Wrestling and 10 points more in Freestyle and Women’s Wrestling, he wins the match by superiority. In any case, the referee must wait for the end of the action: attack, counter-attack or takedown where the wrestler is in a position that may lead to a fall. If the referee has not heard the gong, the mat chairman must intervene and stop the bout by throwing a soft object on the mat, in order to attract the referee’s attention. Any action begun at the time when the gongsounds is not validated and no action performed between the sounds of the gong and the referee’s whistle is valid. When the bout has ended, the referee stands in the center of the mat facing the mat chairman’s table. The wrestlers shake hands, stand on either side of the referee and await the decision. They are forbidden to lower the shoulder straps of their singlet before leaving the competition hall. Immediately after the decision is announced, the wrestlers shake hands with the referee. Each wrestler must then shake hands with his opponent’s coach. If the above provisions are not observed, the wrestler at fault will be penalized in accordance with the Disciplinary Regulations.
It would seem that Carr was not in a position that would lead to a fall, so they stopped the match when MM attained a 10 point lead. At least that is the way I interpret it.