Now, something I did hear the brothers mention is that a JC does not necessarily mean expulsion, kinda hinting to me that an option would be to publicly reprove me.
You know already- you have to kiss their asses. You have to say "I was wrong to post that book, as I said, and upon further reflection, I was wrong to talk about leaving the organization. It is Jehovah's organization , it has the truth."
That's the only way you get out with reproof. You already know that. It doesn't matter that your thoughts are not a violation of the rules.