The hows and whys of the Willow Creek Leadership DVD Summit have already been dissected all over Blogdom, but here is a post from a guy who actually was there (over east) and heard what Bono said.
(Source of link Phil Baker)

Tony Morgan

“The interview then shifted to Bono’s music. He said, “I want my music to do something positive, but I want to be honest and own up to my earthly confusions.””