DETROIT — A former high-ranking official at the University of Notre Dame was ordered temporarily held without bond Friday after federal prosecutors alleged he tried to abduct an ex-girlfriend in Metro Detroit and was caught with a kidnapping kit that included a gun, handcuffs, rope, a knife and a stun gun. The order came one day after prosecutors filed a criminal case against George Mandarakas, 36, the former director of corporate relations at Notre Dame, that describes a soured relationship that started at the prestigious college. The case involves allegations of a prolonged stalking, a hidde…