Pablo64,
I had just such an experience.
I went bact to college(State school in NJ) at the age of 35. One of my classes was an advanced writing course taught by a flaming, man-hating lesbian who had been a nationally published author. I was one of 3 men in a class of over 20. After an announcement of her sexual preferences and obvious initial hostility from the instructor in the first several classes, I confronted her on her attitude in the middle of the class. I told her that she was welcome to any opinion she wished but I was there to learn the material and not to be abused for being a male or be lectured on the 'superiority' of her homosexual life style. She was flustered but the abuse stopped and her perverted sexusal orientation was never brought up again in the class. Several students, both male and female, approached me during the semester to comment and thank me for making the class less hostile and more tolerable. Sometime the direct approach is the most effective.
BTW, I did pass the class with high grades and a recommendation.
My advisor in my M.A. program was also a lesbian, but unlike that prof of yours, she never brought it up, or thought it was relevant to what she taught. She was open about it, but in the same way the rest of the faculty was open about married; it was just an "ordinary" part of her life. FWIW I remain closely in touch with her and her partner, and they've both been very supportive of me, in spite of our political differences. All my nightmare uber-left profs were heterosexual and mercifully, I haven't encountered any since my undergrad years.