What Carney did is something I'd personally give a miss! However some of these rugby players are nutcases. I've heard stories from ex professionals that top Carney's by a long way, it's just that back then nobody had camera phones to capture the moment, and even if they did their friends werent big enough dicks to let it get out onto social media and mess up somebody career.
I know he's had problems in the past but he's been better in recent times, and at least with this latest incident there's nothing illegal about what he did (just rather sick!). I agree with the above that if there's any chance, any chance at all, then we should make a move.