The divorce action between Gossip Girl star Kelly Rutherford and her estranged husband has turned ugly, with the actress seeking to bar him from leaving the United States with their 2-year-old son for fear they'll disappear. Estranged husband David Giersch countered in L.A. Superior Court with papers alleging the actress, who's four months pregnant with their second child, has a bad temper, once throwing a laptop at him and another time trying to sock him with her fist. Rutherford, 40,