I am afraid the decline of the Bush presidency started even before that.
Try the day the rioting began after we sacked Baghdad.
It started when he misread a 51% victory over a horrible democrat candidate as a mandate. No president has had a mandate since MAYBE Reagan, and even he had to deal with a democrat congress.
It accellerated when there was no Plan B or any communication and plans from Bush - or anyone else for that matter. I don't blame this strictly on Bush - and in fact blame it more on the congressional leadership for not picking up the slack. Followers aren't respected outside of the beltway.