Before John York absorbs one more cheap hit over the dissolution of San Francisco's Olympic dream, let's consider the possibility that the 49ers' owner did an enormous favor for the city. When his wavering commitment to a new stadium at Candlestick Point unraveled the bid for the 2016 Olympics, he might have saved San Francisco from a vanity project that often leaves ugly blemishes on a community's bottom line. A year after the Athens Olympics, the ledger still showed a pool of red ink deep enough to support platform diving. Estimates from Australia set the debt for the Sydney Games...