Solving The Clasico Riddle In Iraq

There was a bit of an argument over something which happened in one of the forty-two Clasico matches no, really -that beat us senseless recently. The second leg of the Champions League semifinal involved a moment of controversy when Gonzalo Higuain had a goal ruled off for a foul on Cristiano Ronaldo (though wasn't the whistle already blown before Gonzalo took his shot?