Strokes do mess with the brain, that is true, but it is not possible for it to change sexual attraction. He is saying he went from a rugby player to a hairstylist. Maybe it could of changed his interests, as in he likes more feminine things, but it doesn't mean he is gay. So in my opinion, he always was gay, or is just a lil deluded from his stroke lol, and isn't really gay.
It's not impossible ~ I mean nobody actually knows if being homosexual has a direct link with the brain or anything biological. I've always said I think it's a mixture of biology & environment.
I think everyone is born with the capability of being gay and it's someones environment and nuturing during a certain time in human development which decides whether someone is or not.