In my reverse triple bank shot theory, this puts Clark back in the running for VP slot. Obama makes clear he did not repudiate Clark and doesn’t think he should apologize. So what I said here should be amended accordingly.
The first link (via ThePage) has YouTube of the question/answer after his faith speech where Obama addresses the (non)issue.
Obama’s next move is to pivot and get back to his central theme that McCain is using this as a distraction because he doesn’t want to talk about Iraq, belligerence towards Iran given that McCain’s positions on such matters are in such stark contrast to the majority American view.