New York - Unpredictable Jean Shepherd, who was axed for the second time in two weeks as all-night disk jockey at WOR here last week, may yet air again on the station if a reported news deal goes thru as scheduled. Shepherd was canned again, Friday (17) after being cut off the air for urging listeners to buy Sweetheart Soap, which did not advertise on WOR, just to prove that he can induce his "night people" following to buy soap. The pending deal, it is understood, calls for a new Sunday 9 p.m. - 1 a.m. time, with Shepherd to be sponsored largely by the product he had plugged gratuitously - Sweetheart Soap. Shepherd had been given notice by the station the week before the sap episode on the grounds that he was not sufficiently commercial. But he was retained after several hundred of his ardent flock rallied at the burned-out Wanamaker's department store. Friday night (24) Shepherd drew several hundred fans to a Times Square drug store where he autographed copies of "I, Libertine," the novel that grew out of a gag in which his followers had harried book dealers all over town asking for the tome which at the time was strictly imaginary. The autograph seekers turned out in response to spots bought on the Long John Nebel show, which replaced Shepherd.