Bush is shifting on his statement from involved to if committed a crime, and cite the articles out there on it such as:
President Bush said Monday that if anyone on his staff committed a crime in the CIA-leak case, that person will "no longer work in my administration." His statement represented a shift from a previous comment, when he said that he would fire anyone shown to have leaked information that exposed the identity of a CIA officer.
http://www.msnbc.msn.com/id/8605680/ So you could say that, as is widely reported in the media, Bush has shifted from his original position of firing anyone involved in leaking Plames identity to having committed a crime. There is no moral high ground to be found in backtracking from a commitment to the public.
Or something of that sort. Your response is great, but I wouldn't let him stick you with an erroneous label of inaccuracy. You were right -- he is not.