IIRC that dude from moreplatesmoredates theorized back then that the person could be an intersex with partial Androgen Insensitivity Syndrome, meaning XY cromossomes, Female external genitals, no uterus, internal testes.
That would explain the person being biological man born and raised as a woman as the syndrome prevents the development of the male sex organ. It doesnt prevent from having the physical advantages of a man though.
That would suck for the person and for those competing against her.. and would probably be mind blowing for the person, since she would believe to be a woman her whole life without being a transgender person.
I know it may sound like craziness for some people here, but it's a real but rare condition that may explain the whole situation. The current estimates is that it afflicts around 0.002%–0.005% of the population