I find Brown's apology puzzling

Michael Brown is now saying, "Oops, the Katrina disaster really was my fault," and I do not know why. Yes, thousands of documents have been released that disprove the Rove/Hughes version of things, and that destroy Brown's Congressional testimony, otherwise known as a Pack of Lies. But the news media hardly went out of its way to report that Brown was lying, and the American people are hardly known for their burning desire to know the truth. In other words, there is no reason to believe that Brown was "found out" and had to own up to his lies.