ARCADIA, Calif. - There is a feeling abroad in the land that any horse who hasn't spent time vanning back and forth across the Delaware River need not bother showing up for the spring classics. The recent exploits of Afleet Alex, Smarty Jones, and Funny Cide make the Mid-Atlantic look like the cradle of Triple Crown civilization, and who's to argue? Once is a fluke and twice can be called a geographic coincidence. But let it happen three times and you've got yourself a disturbing popular trend.