If McCain really refuses to debate him on Friday, should Obama fly back to Old Miss and hold what would amount to a press conference?
He could say, "I know this is an unusual time but I still feel it's very important - more important than ever - for the American public to hear from the candidates. One of the candidates, anyway. So ask me what you want..."
Without McCain there to challenge his answers, it'd be like a mini Democratic convention....
And better than that, McCain would end up forfeiting his "foreign policy" debate.....(but then, I suppose all hell would break lose in terms of renegotiating all the other debates, so who knows what might happen next).