I still feel someone at the BBC is playing Moffat and Yates off against one another to a degree because the BBC could clear this up quite easily with an official statement.
That's what puzzles me. It would be a very simple matter for the BBC to clear this up. Yet, I don't think they gain anything by creating this conflict.
If I had to guess, which I don't but I'll will anyway, they may be planning the film for after Moffat's departure. They want the pieces in place now for production to begin shortly after he leaves.
Why? Maybe they know he's against the film and will wait for the new show runner? And, clearly, the BBC couldn't announce that the film will come out after Moffat leaves because that would cause quite a ruckus!! Not to mention ill will!
Mr Awe