Tezzer what a dreadful experience. Very difficult situation for the CC but I would not have been happy with such a hands-off response. I don't expect CC to be vigilantes. But if they are prepared to restrain drunken/abusive passengers, then why not for a prolonged, violent domestic such as this? Never mind whether we decree domestics to be a 'private matter' (hmmm) ,to me this repellant man's behaviour was clearly upsetting for other pax and that is ground enough for more intervention.