Hi @Thislife
I have faced that situation a couple of times for different reasons.
The first time was when I was suffering emotional abuse at the hands of my MIL behind my hubby's back. She was very good at playing the victim as the flip side of what she was doing, so she was destroying my ability to cope, then presenting me as a bully, and jealous, and over-sensitive, and selfish, etc when I tried to set boundaries on her. It became completely untenable. I realised, with three small children, if I couldn't "wake him up" to what was going on, I would have to leave.
Long story short, he didn't believe me, but offered an in-between, and this is what I want to impress upon you .... this can create a mid-way vacuum that buys you space and time to consider and negotiate towards solutions. My WH (Wayward Husband as I refer to him as ....) said that because he wasn't witnessing the behaviours in his mum that I was describing, and found it impossible to believe she could behave that way, I would have to address her so-called behaviours on my own, but he would stand back and not interfer or take sides. It wasn't ideal, but it worked. I took her on by setting very firm boundaries, remaining frostily polite under all circumstances, limited my and the kids exposure to her, and refused to respond to her attempts at emotional blackmail and blackening my name to the rest of the family. Gradually her behaviours began to come further out into the open as her frustration and anger grew, and by then it was clear what I had been dealing with. Truth surfaces.
The second battle has been epic for us. My husband was suffering from a "hidden" eating disorder, now identified as BED .... and he was very large as a result. When we sold our business a few years ago, he set out to lose weight and get himself healthy - admirable goals - but was only really equipped with a family background of crash-dieting and excessive exercise to achieve this. He worked with the family doctor, masquerading as if he were following advice and instructions, perhaps even lying to himself, I don't know. Beneath the veneer he was veering off into no-man's-land ..... an different, combined, alternative eating disorder has resulted. He jumped out of the frying pan and into the fire .....
The effect on our family built across time. At first it was just distressing watching what he was doing to himself without being able to do anything. When I tried to speak with out doctor, the clinic took intervention against me instead .... !! Gradually his behaviour turned more and more emotionally abusive as the illness took over his life, and our children were in harm's way, as are yours. I reached that point again of realising that I would have to leave if we couldn't work out a way forward. Another long story short, we again agreed to disagree, sort of .... in his wayward son state of mind, that has amounted to pacifying him and to some degree enabling his behaviours, in order to curb the abuse and create a space we can keep functioning out of. It's not ideal, but it is carrying us forward until he either emerges from denial or suffers a health crisis dramatic enough to spill the beans on what is going on.
How does this relate to you ? I am wondering whether you can "neutralise" your husband in this situation ..... have a deep enough discussion to flag him to the fact that if he can't sit on his hands, step back from what is happening with the kids, and at least support / not counter your decisions and parenting autonomy while you seek the help you feel is appropriate for the kids, you intend to leave him. Can you tell him that even if he believes you are wrong, you have the right to pursue this and will do so with or without him ? It may be that the specialists you engage for the kids will be able to break through your husband's denial, and in this way, save your marriage. If you can remove his interference long enough to take the action the kids require, the rest may resolve itself, but you have prioritised the kids' health, which you already understand is the priority over the marriage.
Sorry it's so long, and as much about me as it is, but I am hoping that showing your my hand and how I am playing it will help you with the cards you have been dealt ....
All the best, and take care .... here for you if you want to chat about it.
🌷💜