Hmmm. I think that the minimum response nescessary to ensure good order would be appropriate. Back in the day a good friend of mine suffered a bikie insurrection on board abeam Gualdelajara. He diverted, the Mexican policia performed the mobile **** storm all the way back to the prison. One of the three died, the other two were still there three years later.
I think the piņata would be a useful metaphor in the minds of your average douche bag who acts out on board, but how to evoke that particular image without causing undue offence?