"Sometimes they have to go out but they have just got to monitor what they do and the timing of it. In that respect, if they were told not to go out, then that is average and if they were drinking a lot then that is even worse.
"Manu is a non-drinker but he made a pretty bad judgement call as a leader of those younger guys. He has been dealt with and, in my opinion, we move on."
Barnett says the issue is something for the Warriors to sort through.
"My concern is now that they have gone against the grain of the club. [Warriors managing director] Jim Doyle has stamped down pretty hard. I respect Jim immensely and I think he has laid down the challenge and said to the players, 'these are the standards we set and if you don't meet them we are going to make some pretty big calls'.
Barnett and his fellow selectors will have to pick a side missing a number of first-choice personnel. Fullback Roger Tuivasa-Sheck, Dean Whare, Simon Mannering and Tuimoala Lolohea will miss the game with injury and five-eighth Kieran Foran is taking a break from the sport after the breakdown of his relationship.
"Kieran Foran is the biggest one you could envisage at the moment," Barnett says. "We are concerned and hopefully he gets right. We have to deal with the pieces and we have to try to select the side that replaces that man because he has been a fixture in the side for a while now and he is pivotal for Shaun Johnson."
Barnett says there is a lot more depth available to the Kiwis these days and they will still field a competitive side.
