This is more than concern for Bob Sheiffer. This demand that he be removed will keep the CBS story front in center and will in effect force the news networks to look at the DNC memo ties. If the Bush people hadn't done this, Rather's apology may have ended the story. This shows that it is only beginning. Excellent move by the Bush campaign. As a side note, Brit would be great.
You beat me to my point, and succintly so.