Well, if I remember correctly, what Broz does is what he learned from Krastev when he trained under him, and put into practice in essentially the same manner (there are likely some minor differences somewhere in the methodology). And I believe what Krastev had Broz doing was a slightly watered down version of what Krastev endured under Abadjiev. So to end this mini-rant I'd say it's an application of the "Bulgarian method" but I wouldn't say almost exactly.
And I'm quite sure it has been debated/discussed on here, though I feel the discussion was a year or two ago. Maybe around the time Pat first snatched 182 in training, I think that youtube video generated some discussion.