From the very limited information avaliable, i can't see a problem at the moment...
Uni sports initiation ceremonies can be 'nasty' enough, to onlookers, so given this is the army (well, navy), how the hell are we supposed to know whats happening? Especially as it's being reported by the BBC.
At a few parties i've been to, any marines/army ppl there nearly always end up butt naked and usually turned up in drag to begin with. By 99.99% need not apply, it means that the vast majority of us are not built to go through their training, neither physically or especially mentally. They're forces (so already 'different' from us), and marines, so an even smaller subset of that. If it's their initiation ceremony (and i'm pretty sure they're common in certain 'clubs'/groups etc of people) let them be. Chances are they were aware something like this would happen....and from a few ppl I know in the army/marines, i'm pretty sure they'd be fine with it. But...
If it got out of hand and one was kicked unconscious (maybe prompting the submission of the video a more 'moral' participant), then that needs to be dealt with.