The governor of South Carolina went AWOL for four days last week. No one, not his security detail, not his aides, not the lieutenant governor, not even Sanford's wife knew where he had gone or what had happened to him.
As Darlene Ensign can testify, when a middle-aged Republican politician (Sen. John Ensign is 50, Mark Sanford is 48) goes walkabout it is usually for a Side Project with his blond* Relaxation Assistant. Sanford's wife is not concerned, meaning he has disappeared like this before. The official reason given is he's "taking time to recharge" which pretty much admits he's with a bikini-clad Relaxation Assistant.
*Republicans usually screw blonds; Democrats prefer brunettes.