This is going to sound difficult
@Bear - but I feel for you on this, I've seen this rip through families, but after a while it did settle down.
Here is my advice, take it or leave it, from my experience of life in general.
If he supports you in anyway, let him, and be thankful for it - be it only financially. The issues with you sound like they're more issues he himself has, parenting is not something you are given a rulebook on, and if suddenly things conflict with your own experiences or beliefs it is not possible to just shut that down. I am not excusing the behaviour by the way. Let's make that clear, but the more you emotionally wish to force the issue, the worse it can get. Purely from my experience, the more detached you become from the outcome, the more likely you are to find openings - it kind of inexplicably eases the energy around.
There are certain members of my own family I have no dealing with, or very little, they don't accept me for who I am, and I am not changing and neither will they, but slowly, others came round to seeing that what went on behind was not as simple as it seemed.
Maintain your dignity and strength my friend, take solace in those who are around, and give them time to adjust - if nothing else, it may ease your own anguish a little.
Hope you feel a little better about things soon mate, I really do.