I admired Obama when he did not throw Wright under the bus after the whole debacle flared up the first. But as you probably know, Wright persisted yesterday, giving speeches which, among other things, reiterated his suspicions that the US government is responsible for AIDS. He also said that Obama renounced his words merely because he had to do what a politician does. In essence, he threw Obama under the bus. Obama wasn't left with much choice but to come against Wright, rather just his words. Hindsight being 20/20, it's about damned time.

I have spent my entire adult life trying to bridge the gap between different kinds of people. That’s in my DNA, trying to promote mutual understanding to insist that we all share common hopes and common dreams as Americans and as human beings. That’s who I am, that’s what I believe, and that’s what this campaign has been about.
...
I am outraged by the comments that were made and saddened by the spectacle that we saw yesterday.
...
The person that I saw yesterday was not the person that I met 20 years ago. His comments were not only divisive and destructive, but I believe that they end up giving comfort to those who prey on hate, and I believe that they do not portray accurately the perspective of the black church.
...
They certainly don’t portray accurately my values and beliefs.
...
If Reverend Wright thinks that’s political posturing, as he put it, then he doesn’t know me very well and based on his remarks yesterday, I may not know him as well as I thought either.
...
I gave him the benefit of the doubt in my speech in Philadelphia, explaining that he has done enormous good in the church. But when he states and then amplifies such ridiculous propositions as the U.S. government somehow being involved in AIDS; when he suggests that Minister Farrakhan somehow represents one of the greatest voices of the 20th and 21st century; when he equates the U.S. wartime efforts with terrorism – then there are no excuses. They offend me. They rightly offend all Americans. And they should be denounced, and that’s what I’m doing very clearly and unequivocally here today.
...
It is antithetical to my campaign. It is antithetical to what I’m about. It is not what I think America stands for.