King was never in Bethel, he was just invited there to perform once in a while for projects. He's been in show business full time (mostly night clubs and casinos) for some years now.
In fact that's true of many of the performers you see in JW music and movies; they're not Bethelites and they do it secularly (a career which is frowned upon in the publications) but they get a pass because they donate their 'skills' for WT projects.