I don't think George Takei's sexual orientation was a mystery to anybody who was paying attention.
P.S. - It's also completely irrelevant. Sulu still kicked all kinds of ass, especially evil Sulu from Mirror, Mirror with that badass scar on his face.
I'm a full-on Trek fan, by the way. If you presented me with the option of watching any Star Wars movie or Wrath of Khan, I'd choose Khan every time.