Gold Coast coach John Cartwright says he's happy with team discipline at the moment, but it's not something a club can ever take its eyes off.

"You've got to remember you're dealing with 30 guys, a lot of them under the age of 25 and every now and then they get a little bit loose," he said.

He's declined to comment on the Greg Inglis affair apart from saying he was pleased to see Melbourne take prompt action.

"I don't know what's happened but I applaud the fact that Melbourne acted quickly (in standing Inglis down), at least we won't be wondering what's going to happen."

Titans centre Esi Tonga missed Sunday's 30-10 victory over the Warriors in New Zealand after being dropped for missing a compulsory recovery session.

And the coach said Tonga won't play against the Rabbitohs on Friday night either.

Cartwright says while some people might think missing one recovery session is a small lapse he wasn't prepared to let discipline slip.

"You've got to look at small things and that's where breaches start, and knowing the individual, some guys need a bigger kick up the bum than others.

"It could end up costing Esi a hell of a lot.

"He's going to have to bide his time now and hope for an injury or a lack of form.

"There's no point sending a message out and then taking the message away.

"I was very happy with the guys that came into the side (for the Warriors game) ... they did their job and put the team above themselves and in big games that's what you need.

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