For the moment, Irving is sulking in his tent, having fired off a letter to the Free Press last week in which he modestly insisted that he "didn't invent class warfare," and having entered a nasty public squabble with his old friend Peter Shumlin, president pro tempore of the Vermont Senate, who's "disappointed" that Irving "doesn't feel more responsibility for all of Vermont's kids. If you read his novels, his characters are often fighting for the little guy, or the person who doesn't have a voice. I don't know what's happened to John." There are people up here who honestly think he's lost his mind, including the editors of nearly every newspaper in the state and Peter Freyne, Vermont's foremost political columnist, who's been tweaking the Great Writer mercilessly in his column in the weekly Seven Days.