Is "Dirac" the most passive-aggressive person here, moving questions to other categories?
No, that would be Cyclops. I urge him to get professional help for his affliction before he hurts people. EDIT: "The only questions I can move are my own, since I'm not at a high enough Yahoo level." Don't worry, he will deny that as well.
Dirac is only level 3. Unless someone admits that they move questions, usually claiming that the aske needs their help to "properly" categorize the question, there is no way to know who is moving questions. The offenders might not even be someone who posts in the category.