As someone with a statistical background, I can safely say the methods he 'disclosed' on Friday are complete bunkum. It is simply not possible to predict the lottery.
However he did what he did, it was clever and I can't explain it. An important point as I'm sure everyone here has noted, is that he revealed his 'prediction' after the draw.
IMHO, far more entertaining was the David Blane 'What is magic' programme on Friday night.