Hey Ravens. You a Ravens fan?
I understand those who feel like they need to write a letter to get it out there. It is an expression of control on a basic level. But you should consider some things that while not guaranteed to be 100% true, are close enough.
1) Several people have told you your letter won't be read. They are most likely right. Why write a letter for nobody to read.
2) Writing the letter gives the illusion of control. Having them label you an apostate, and you not having legal recourse for it.....THAT is control. Don't give it to them.
3) Your family and baby are involved. Do not give in to emotion and do this. It can separate you from them. Having them "wake up" may never happen, but they are still your family and you are responsible for keeping your integrity as a husband and father to them.
If you don't care and are willing to lose anything, then go for it. otherwise, use it as therapy as someone suggested, and then just fade away. Everyone responds to different things. What you see as damning imperical evidence of conspiracy or power grabbing, another person sees as not a meaningless change at all. You have to deal with the reality of the person you are engaging, not just try to alternate theirs to match yours. Its a losing proposition, and plays right intot he hands of those that would just want to label you an apostate and be done with you.
Don't give them the control. You have a dog in this fight, so don't just walk off the field.