Porter Goss Resigns - Who's Next?

Earlier today I was looking at the odds of who would be the next to leave the Bush Administration. When I heard the news about Port Goss resigning - I checked to see what his odds were. I was surprised that he was not even listed. I think that points to either the fact that Goss' resignation was not something which was expected or maybe because the head of the CIA not a cabinet level job. It sure took me by surprise.

Here are the odds for the rest of the major players:

Treasury Secretary John W. Snow - 1/1
Homeland Security Secretary Michael Chertoff - 12/5
Health Secretary Michael O. Leavitt - 7/2
Agriculture Secretary Mike Johanns - 9/2
Interior Deputy Secretary Lynn Scarlett - 11/2
Defense Secretary Donald H. Rumsfeld - 6/1
Labor Secretary Elaine Chao - 9/1
Energy Secretary Samuel W. Bodman - 9/1
Commerce Secretary Carlos Gutierrez - 10/1
Housing Secretary Alphonso Jackson - 10/1
Transportation Secretary Norman Mineta - 12/1
Attorney General Alberto Gonzales - 15/1
Veterans Affairs Secretary Jim Nicholson - 20/1
Education Secretary Margaret Spellings - 25/1
Secretary of State Condoleezza Rice - 35/1

I think John Snow has to be next while Rice and Rumsfeld aren't going anywhere.

EDIT: With the announcement coming on a Friday afternoon (when things are released that people really don't want to get into too many news cycles) - you have to wonder if there is more to this story.