Matters seldom plateau. Eventually, matters become so extreme that the situation comes under public notice. Small children are disappearing, animal parts discovered, people breaking down and crying for no reason. Everyone gets nervous, and members of the band just bolt. Clothes in the suitcase, gas up the car and go.
Separation brings a return to normalcy.
The cult members find themselves wandering into churches, and grasping at some explanation outside of themselves - they were possessed, they were under the influence of others, surely it wasn't them. Destabilized, the band often breaks up entirely, and may or may not reform later, perhaps with others or elsewhere. The leader is most likely to restart, but in a new location, where things aren't so hot. The second scenario occurs when the band has a lot of reluctance. At first the Satanic Rituals were a sport.