Don't forget that most American Blacks support Wright. At the NAACP convention this past Saturday night, the introductory speaker called Wright "a prophet." Wright's extremist, racist hate was met with applause and a standing ovation by the crowd of notable African-American civic leaders. I think most African-Americans will see Obama as an "Uncle Tom" since he ended his association with Reverend Wright. There stands a good chance that, if they won't vote for Obama, then they won't vote at all.
The Rev. Wright incident could cause more superdelegates to support Clinton, and Clinton becoming the nominee. However, if Obama still wins the nomination, this could cause him to lose his base, the Black vote, and subsequently, the general election.