Probably a little too soon for disownment. Give him a few days to calm down and come to his senses. So far my only bad reaction, my wife, started horribly but then changed to a level of acceptance. Each time there is a noticeable change we have a fight. A day later she cools off and we discuss it again.
I won't lie it's not easy to keep people that have always been there in your life. Even if some of them accept the ones that do not won't make it any easy to spend time with the ones that do. For example if you mom accepts but your dad never does it will be difficult to spend a holiday with just your mom.
Take your time with it though. The psychology between the two sides leads us to feel like we are in a weak position reaching out for help. You should turn this around and shore up your feelings so that you can see clearly who your supporters are and work with them to build healthy relationships.
That and see a therapist or find an impartial person or very close friend to discuss your issues with. As much as you feel threatened and often insulted the people around us often do to. So we can't always speak everything that is on our mind to those we love. Having those people who can help us sort this out is priceless.