...would be to resign right now and end his lame duck waffling, before his widely perceived incompetence and the total lack of faith that investors place in the current administration cause the Dow to fall another thousand points. A lot of damage can still ensue prior to Obama assuming office on January 20, 2009.
Rather than an admission of defeat, such an unexpected act of generosity and humility, of self realization and courage, while totally out of character, might prop up his reputation. By giving up his current posture of doing nothing and instead quitting decisively and posthaste, Bush has a chance (a small chance, to be sure, but still a possibility) of rescuing a legacy generally perceived as a total disaster and elevating it to the merely mediocre. His self imposed departure, effective immediately, would reveal a "kinder, gentler" man, or at least one who has made some peace with the imperatives of history.