I feel for you JRJW, I really do. I myself can relate because I too had a very manipulative,lying, mentally and emotionally abusive ex-husband and a hall full of misogynistic elders as well as in laws who turned blind eye to what he was doing to me while married to him. I didn't know him well enough before I married him to know that he had issues beforehand nor did the people who knew his history tell me.
Your happiness and well-being is paramount. You've already made the first right step by separating yourself and your child from him. I agree with Wake me up before you JOHO, be very cautious of those siding with him or telling you you should put up with the abuse and go back to him. THEY ARE NOT YOUR FRIENDS! Your soon to be ex will say anything to these people to make himself look like a sweet smelling rose while trying to sell the story that you are the unreasonable and crazy one. Don't fall for his manipulations or that of his flying monkeys.
I felt the same way you did in the beginning for a long time, feeling like i was trapped with no options. However I'm here to say that however much the religion tries to make you feel like you have no options YOU are not trapped! If you are not happy get out! Work on getting your circumstances and that of your sons stable. then work on divorcing him. What the elders or your husband thinks or tries to threaten you with doesn't matter.
I won't lie it's going to be hard in the beginning as you navigate through these tricky waters but YOU WILL SURVIVE this and you will come out stronger and happier. I Promise you that!
My life has changed so much for the better since getting free of both the WT and divorcing my abusive ex. Yours will no doubt be the same and you will find real love again. But right now focus on getting out of this Marriage and away from the Abusive religion as well.
Lostwun