....or, how about the misguided Pastor has to GO... and the church gets back on the plumb line! ... ymmv
That’s the best option. However, since the basics, distinctives of the denomination, theology, etc., haven’t been truly taught in decades, members don’t know what they don’t know. They don’t know the preacher is off the rails. Mom is the only one left with a solid Biblical foundation, and she has little power. She’s 96, and others don’t really listen to her much.
Satan is powerful.