I think you misread - he doesn't want to ban the movie, merely the entire MGM/UA studio and related companies. A much smaller undertaking than merely 'banning' a movie...
Is it too late to say "I'm sticking to my original post on this"?
It's not as if the homosexual activists haven't done the same thing in the past to bring pressure to bear:
http://www.stopdrlaura.com/
What's next? A film championing the medical experiments of Dr. Josef/Joseph Mengele?