There was an obvious swinging arm after the initial contact, the initial contact was questionable as the first contact was the arm to the chest. When you watch the replay Aitken is stll good when he gets hit, its the swinging arm that got him down.
If anything is an embarassment to the game it is the coach Robinson, what happened to sportsmanship and accepting a loss at the hands of the better team on the day. The refereeing was not the best, and poor calls were made against both teams. The Roosters had no attack, both of their tries were poor defensive lapses by the Saints (dugan drop and aitken turning his back). Was Maloney even playing?