and it's hard to find the widescreen DVD, or at least it used to be. There are lots of hits discussing it if you google it, but I didn't check to see if there's an easy to find wide dvd now.
Without digging up quotes, I think it's known that said that he preferred the full screen aspect ratio. Have you seen Eyes Wide Shut? That one only exists in full screen. So there's a big argument over how the movies that were matted are supposed to be watched. I think he knew they would be shown in widescreen in their wide release, but people still argue that he shot them the way he wanted people to see them, even if that was not what the initial theatrical run was going to be like.
This controversy actually exists from some 50s movies too, because widescreen was new and not every theater could show it, so some movies were shot to be matted and shown both ways. The release of Touch of Evil that included multiple versions had them all in widescreen but I know that Dave Kehr insists it should be full screen. I also remember people being pissed about the Shane blu ray being in widescreen.