That's hilarious. I honestly couldn't even remember it being in 3D. I was blown away by the 3D in the Titanic trailer, and Hugo was just amazing. I really couldn't remember Phantom Menace being in 3D. Now that you mention it though, if I think hard enough...I think I do remember it playing with my glasses on, because we were told to put the glasses on before the first trailer even started.
Wow, that must be a serious sign of trouble if I can't even remember it being in 3D. Obviously I must have been quite impressed. Funny thing is, I vividly remember all the other trailers being in 3D, and thinking they all looked pretty good. Maybe my brain just shut down temporarily to prevent harm to it when it saw the Lucasfilm logo, kind of like the Windows message that Windows will close explorer to prevent damage to the system.
I do remember the couple right behind me commenting just after the trailer ended. The only thing I could make out was them saying "episodes 4 though 6". I bet I could extrapolate and safely say that they were thinking the same thing I was - at least if he started with episode 4, there might be a slim chance I'd see it in 3D.