The 'vagina' bit is completely irrelevant to Caster Semenya as it's essentially useless - we all know what the purpose of it is, hers serves none. It's like a bloke having breasts, they'd serve no purpose. I read somewhere (i'll try and find it) that when she was born, her genitals were so ambiguous (shallow pseudo-vagina) that she was deemed female by committee. As for the sperm bit, her testosterone levels are between 15.6 and 29.3 nmol/L - therefore they're healthy albeit internal.
As for her stating 'she can't contribute to new life' - she also said that her testicles 'don't make her any less of a woman' so i'm taking whatever she says with a pinch of salt, biologically fathering 2 children doesn't look good for her when she's trying to be reinstated into Women's athletics does it. It serves Semenya's purpose to be female as she's one of the fastest in the world. If she races men, which she should... She'd be around the 6,000th fastest in the world.
This probably the easiest to understand read-up on it, it also contains the details about the 2 boxers in this years Olympics.
As for being a complex situation.. I agree completely, however, what the IOC have done is diminish the chances for women in the name of inclusion for - for want of a better phrase, deformed males (sounds harsh - but that's the biological reality)
Again, I don't want to derail this thread so either PM or start a new thread?