No, we'll just print money to pay it off. Hopefully. Because as much as that sucks, it's better than the alternative.
I don't care how much the dollar deflates, we're already international pariahs due to the effects of the Bush Presidency, and little-trusted as it is. If we give our debtors the finger, that will complete the notion that America is NOT to be trusted, and they'd be right to think that way.
For all Glenn Beck's semi-psychotic fears of "Zimbabwean hyperinflation", we are so far from THAT particular edge that it's ludicrous to hear him speak. The reason? Hyperinflation mostly occurs when the economy is so damaged that you have goods shortages - my favorite phrase for it is "five suitcases of money chasing two loaves of bread". America is not only still the nation with the largest GDP, we are also the biggest consumer of other nations' goods on Earth. As much as they hate our politics, they love American money. I can't seem to find anyone who DOESN'T like American money, no matter how much they hate our politics.
I sure as hell don't know anybody who would go, "Man, that stack of $20 American bills isn't going to be worth anything in a few years, might as well use them to light the fireplace or something." THAT is hyperinflation.
Everybody is on the wrong track. We won't seriously inflate, because the rest of the world needs the prices of their goods to stay low here so we keep buying and their factories stay employed. More likely, the need to print money to pay off the debt will cause the dollar to DEFLATE and erode wealth, and that's where I think the discussion needs to go.
That is one man's analysis of the situation, anyway.