Panthers drop Saints to 0-4 with late FG

David Carr walked gingerly out of the locker room and bent down slowly, grimacing and holding his back straight as he placed a set of headphones in the pocket of a suitcase. Simply walking out of the Louisiana Superdome was a struggle once Sunday’s game against the Saints ended. But a combination of pain pills, shots, grit and inspiration drawn from his teammates gave Carr enough strength to lead…