has said he made this as an ad for the Russian release of the movie as stated here
This shows the start of the video we all know and love and intercuts it with first person video showing that it was indeed all done for this music video. It even includes footage from the 'missing minute'
And I stood up for it being real.
Do I feel stupid? Not really, it was very, very well done.
And this is a great example of viral marketing at its finest.