denial -- it wasn't that bad - he was playing to his Iowa volunteers not the TV.
anger- there was no chance he could have done well in Iowa when the media and the other candidates were smearing him
bargaining -- if he goes on letterman and makes light of gaff and goes on primetime live with his wife everyone will think he is HUMAN
depression - not there yet .. will be there after NH primary numbers come in.
acceptance - sometime before Feb 3rd primaries when Dean drops out.