CommentStreams:D9227480fcbf0ed6e5f1d09ebbd9fbdf
From The Lost Media Wiki
I feel like both your theory and the possibility that they partially dubbed it before getting the news of its ban could line up nicely. All I know is that if they really did start the dubbing process for the episode, I feel bad for the eyes of whoever had to stare at the monitor screen to match the flaps.