@JPB,
If Obama will, as his people claim, agree to any deal that moves reconsideration of the debt ceiling to 2013, he's only doing that for one obvious reason.
Years ago I read an essay by the great Max Weber in which he examines politics as a profession, and he writes something that stayed in my mind: most politicians taking a stand are mere windbags; but there are some few, very few, who truly believe in principle, and will at some point say
"Here I stand, and I can do no other" (words to that effect, from memory, and translating from the German). I believe, with most of the House Republicans, that this is indeed such a time, and that we must chance default in order to restore fiscal sanity in the national accounts. A 1-year debt ceiling extension must be in the final offer by the House unless it, too, is composed of "mere windbags" - as the no-date-sooner-than-2013-fanatics have already proved themselves to be.