But if he's fired he might even start telling some truths about Bush. For example letting in the light on what lies lie behind reports such as "President Bush complained to Defense Secretary Rumsfeld for his failure to inform him about the photographs."   

So there is no possibility of his being sacked. I suppose his resigning might be arranged, if it was seen as essential to help Bush get back into the White House, he might do that. After all, if thta doesn't happen, Rumsfeld is among those who stand to be able to take a lot less money.

Or of course, if things got really hairy, he could always be suicided...