UPDATE: Sanford was originally invited to speak, but the Family Research Council (which runs the summit) was told last week that Sanford wouldn't be able to attend, according to FRC spokesman J.P. Duffy.

Mark Sanford, formerly featured prominently in the lineup of the 2009 Values Voter summit, to be held in Washington, DC September 18-20, isn't on the list anymore--nor is his picture on the Values Voter Summit website.

Sanford was listed in the lineup on the summit's website before last week; now, after the admission, he isn't.

Which indicates Sanford's disappearance from the site is less sudden than it originally appeared, and that his dropping out of the lineup is not a result of today's press conference.

See this cached version of the Values Voter Summit website from June 19. And compare to the current version.

People for the American Way's RightsWatch.org has compiled this side-by-side photo comparison, noting Sanford's disappearance:

sanford values voter.jpg