Gordon is standing in the middle of the key guarding nobody. Marion went baseline and Gordo followed. Gordan was looking at the ball and completely lost his guy. Millsap had his guy on the block. Gordan lost track of his man while watching Kidd with the ball. What part of good basketball IQ is it to leave you man all alone under the basket with one of the best passer's in the league having the ball?
Again look at the break down Locke posted. Gordan didn't loose track of his man as much as he left him to help someone else. Help defense gets you in trouble some times. I'm not saying that Hayward was right but looking at the play "Just lost his man" isn't true