After a match in the Cincinnati Gardens, an enraged fan took a fire extinguisher off the wall and threw it at Costello and Kent from the balcony of the Gardens. The extinguisher hit Costello in the hip, damaging it so much that he needed hip replacement surgery later that year. The fan was arrested, served 15 days in jail, and fined $50 for damaging the fire extinguisher. The hip injury meant that Costello was unable to compete and The Fabulous Kangaroos split up once again. Don Kent returned to NWA Mid-America to work as a singles wrestler, while Costello had a full hip replacement, and was forced to retire from active competition. In 1975, Costello surprised everyone by returning to professional wrestling as the manager of a team known as "The Love Brothers" (Hartford and Reggie Love). He actually stepped into the ring on occasion as part of special six-man tag team matches.