To be fair though, I don't think he has any problem with a director doing anything to their own movie. He's only spoken out when the filmmakers haven't been involved. Ray Harryhausen recently colourized one of his black and white films, to pretty good results. The difference, though, is that Harryhausen made the original version available in the same set. I wonder now: if 3D becomes a permanent element of TV and film--and it could, in the nearish future--would Lucas even offer the 2D versions anymore? And how big would the backlash be if no one could watch the films in 2D anymore? Would his "my vision, my films" rhetoric still hold up to prequel fans?
On the other hand, if he's been anything it's inconsistent. At the same time he was saying the originals won't be sold because they don't represent his vision of the films he was releasing the prequels in pan-and-scan DVD.