Just over midway through the 2010 season, with the Power’s record getting worse week by week, Williams stepped down as coach after Round 15, and Primus was appointed the caretaker coach for the remainder of the 2010 season. As caretaker coach, Primus won five of his seven games in charge, with two of them against in-form teams and , and earned numerous praises from players, staff and supporters for the job in 2011. The club administration had started the search for a new coach and it was believed that the Power would appoint someone who had never been associated with the club before. Nevertheless, Primus was appointed as the senior coach of the club for three years.