Socrates-I agree with you, there were many kind, sincere elders I have known in various congregations. There are a few who are total jerks, but somehow, I think they maybe acting with an enthusiasm similar to what Aaron's son, (Phineas ?) did. Basically going overboard in their 'jealousy' for Jehovah. These ones are over the top, looking for every infraction. Militant. They are lauded for their spiritual purity and so on, so it feeds their frenzy.
I empathize with your being trapped, and admire your honesty that you don't have the courage to openly leave...that is a very difficult row to hoe and no here should judge you negatively for wanting to protect yourself from the messy fall out.
Wishing you the best.