I feel your stress and anxiety - and it's a horrible atmosphere to have to work in.
You say there's another manager who agrees with you, so you're not on your own.
HR are also in agreement with you. They have been informed and they are taking action - it may be too slow for your liking, but there are procedures that have to be followed,
If you feel you need more, are here others in your immediate work environment who can also give you a bit more support / backup, because I would imagine others will also have picked up on his behaviour?
At the minute, the only thing you have any control over is how you react to his behaviour.
And for your own sanity, don't let his behaviour define you and make you feel a victim - why should you feel a victim?!
I'm not sure what form his misogynistic treatment of you takes but, from experience, the best (only?) way to deal with it is:
a) breathe ...... and remember that this will not carry on (even though it seems to be taking ages to resolve)
b) breathe ...... and remember that you are in the right and that he will reap his just desserts (even tho it seems to be taking ages)
c) This person stresses me out with his unpleasantness. Yesterday I contacted HR in the academy chain about his continued misogynistic treatment of me.
breathe ....... stand up to / question each and every time he does this.
I've found that people are far less willing to' freely express themselves' when others question their behaviour.
They only seem to bully when people don't question what they say and what they do.
He's one person - and there are several / many? others who've picked up on his behaviour,
Don't let one person like this and their opinions have such an effect on your life.
The issue is being dealt with via the proper channels and if you can't stand up to him in the meantime and defend yourself, the only other option is to wait for it to be dealt with in the fullness of time by others through official procedures