What exactly should I have done?
I don't think I'm hijacking the thread because you are venting about a bad situation, which implies you're open to discussing it, and then you're directly stating, "What should I have done differently?"
Participating in the religion in any capacity, but especially preaching, encourages more innocents to join and existing members to stay.
This is the actual consequence no matter how "held hostage" you may feel.
But you are not an actual hostage.
Granted--just like many other adult situations, religious or not--all available choices have imperfect outcomes.
You're choosing yours. Choose wisely.