I wonder if the Vatican technically could make the distinction between the 1962 missal being the "Extraordinary rite" because of the (unprecedented) additions and subtractions that were done that year.
If they are, go ahead and say that the 1962 missal is an "extraordinary form." The Novus Ordo of course would not be the ordinary form, but it would be any missal from 1570 until 1961, would be considered the "ordinary form."
Just my brief ranting for the day.