There is a good thread on the James Allen blog about the penalty Schumi has received.
http://www.jamesallenonf1.com/2010/0...egal-overtake/
It seems confusing that although the race was finishing behind the Safety car the green flags were out. Previously when finishing behind the SC the yellow flags stayed out.
Basically Alonso was caught napping by an opportunistic Schumi, no danger as far as I can see as he was past the striken Lotus when he made the pass.