Crusaders players, including All Blacks winger George Bridge, were accused of directing homophobic slurs and gestures at patrons at a fast food restaurant over the weekend.
The 48-year-old Spaniard said in the immediate aftermath of Saturday's rout the domestic treble is more difficult than winning the Champions League because it demands greater consistency over a gruelling season.
The 29-year-old American has now won four major titles in his last eight starts and is the first man to ever hold back-to-back titles in two majors at the same time, ahead of his tilt at a third successive US Open crown next month.