Personally, while I understand and agree with the story and its reasoning, I believe he keeps him around as much for the fact that his initials and job title are indentical which makes it SO much easier for him to remember who he is and what function he fills.
There was a bumper sticker I heard about recently which I thought was priceless. It read 'Some small town inNuff said. Here's the link to the article.
http://www.time.com/time/nation/article/0,8599,1649013,00.html?xid=feed-cnn-topics
In a romantic and creative partnership fidelity is not essential but loyalty is paramount.
sorry, to go a bit off topic, i tried to read your linked article and became aware of how out of touch i am with american politics since living in england for the last four years. one of my motivations for emmigrating was to escape GWB but i didn't know i would lose touch with all the other characters and nuances of everday politics i confess, i barely know who alberto gonzalez is or what he's done...
anyway, if you liked that bumper sticker you may enjoy this...
Who's going to be next?
(I haven't written anything on the matter myself but JanieBelle has. You can read her comment on the resignation of the AG here)
...because public space really matters!
Elizabeth