Well, this is awful.The Web blew up Friday afternoon with the news that Rolling Stone magazine no longer stands behind last month’s horrific, explosive story of a gang rape at a University of Virginia fraternity. A report in The Washington Post cast central elements of her story into serious doubt. Her friends and supporters now say they’re dubious, too.It’s disastrous for everybody involved. At this writing, the victim, Jackie, insists she was telling the truth about being raped by seven students. Whatever the truth, she must be in a world of pain right now, particularly if she tried to extricate...