Yup they have expanded it to certain model years of the Solstice and Sky. I warned a coworker yesterday, but turns out her Solstice is a later model than the ones involved in the recall.
Good luck OP. One of my 350Z friends had that happen to his car once years ago, totally random. He was pretty freaked out but he had no problem stopping the car and pulling over. Had never had that happen before, and hasn't happened since.
I have to wonder if maybe the biggest danger is from the steering column locking up? I mean if the car thinks there is no key in the ignition, and you try to turn the wheel, what would stop it from locking.