Thanks for the advice - I know that making subtle comments doesn't work. In the past I've tried to get some to at least start thinking about what they believe - I once mentioned that the 14th century fit the description of the last days (then went on to disprove it of course) and had at least one brother discuss it with interest afterwards. Although he is still at meetings, he gives evidence that he knows what is really going on. If I do take the job, I would try to gradually educate some to "prove" what they are saying, which then gets them to think. It wont work with many, but if I can help one to escape it would be worth it.
I'm not ready to exit or even fade yet as it would cause too many family problems. One elderly relative seems to have dementia and the upset could prove fatal, so I will wait until the natural course of events happens (that sounds heartless - I am just being vague to protect my identity. I will be devastated when it happens)