That is glaringly obvious. There is nothing to be gained by merely destroying a couple surplus copies while originals remain safely under lock and key. He must have THOUGHT he had all copies...and the originals.
The nameless "authorities" alluded to in these stories however, always assert that he DIDN'T succeed in destroying any originals, only copies. But since this whole case screams "POLITICAL FIX" from the get-go, I would not rely on any such glib assurances...since the perfidity is being covered up, and the administration has "moved on"...admission of destruction of the originals and all copies would blow their ability to "manage" this story. It would get way more "legs."
Thanks for the ping!