Why not just tell the truth? The odd, small shadings of truth were the talk of the spin room in Concord after Sunday's debate. CONCORD, New Hampshire -- Mitt Romney's generally strong debate performance was marred by two small and inexplicable shadings of fact -- moments that left reporters, rivals, and allies shaking their heads and wondering why he he couldn't just give a straight and obvious answer to relatively trivial questions. Early in the debate, Rick Santorum pressed Romney on why he hadn't run for re-election in 2006, when his first term as Governor expired. Romney suggested it was...