jgnat -
Given that the power (and danger) of this 'religion' is it's pervasiveness isn't it possible that if he starts going even infrequently that he will get hooked into it again? His parents will be pushing for him to be reinstated and to be truthful I don't really know what he has to do to make that happen - is infrequent attendance enough to be reinstated or does he have to do tues/sun every week for a year or more?