I did it! I cut 750 words from a 2,750 word story and I don't think I lost anything! Well, except the main character's attitude, which frankly I never liked very much--she came across as kind of snarky. I took all that out and I actually think it's a better story as a result.
Now I just have to wait for the Cinema Spec submissions period to open. Ten days!
ETA: And I just realized I have a second story that features a movie as part of the plot. And it's already under 2,000 words. Of course, no editor has liked that story enough to buy it--but it can't hurt to try.