When Mr. Barton soon did issue a statement of contrition, Mr. Boehners office also distributed it, for added effect. Then Mr. Boehner, Mr. Cantor and another party leader, Representative Mike Pence of Indiana, together publicly rebuked their colleague.
http://www.nytimes.com/2010/06/18/us/politics/18barton.html?ref=politics
These are the people who should be apologizing or forced to step down.
I got told Barton retracted on his own. I believe that as much as I believe in the tooth fairy.