An idle threat? Probably not. Fox News has hired formidable legal help for its counter-attack on Gawker and its so-called “Fox Mole” — disclosed last night to be Joe Muto, who worked on The O’Reilly Factor before he was discovered and fired. Ronald Green of Epstein Becker & Green specializes in helping companies deal with unhappy employees. He defended Bill O’Reilly in his 2004 sexual harassment case that was settled before it went to court.