Sean Penn “seems to have been going AWOL” during last month’s filming of Woody Allen’s (untitled) new movie, because, a source tells New York’s Daily News, “he’s p.o.’d at the way Woody works.” The stalemate may lead to a lawsuit, the News reports, with Woody’s producer Jean Doumanian allegedly threatening Penn that if he doesn’t return to work, the production will shut down and he will be held responsible for the cost of the entire movie. The News claims the film is a month behind schedule. Penn’s publicist would only say that the actor was recently ill. There was no comment from Doumanian, and there’s never any comment from Woody.