SHOW PEOPLE SLOUGH OFF THEIR OLD agents all the time. If your career is suddenly on the ascent, you need to sign with a big-time handler who can fully exploit your new aura. And if your career is foundering -- needless to say, through absolutely no fault of your own -- you've got to find the suitably aggressive new handler who can persuade executives that your aura is undimmed. , It's just the way the industry works.
However, when the powerful director Mike Nichols (who, at 61, epitomizes a certain Manhattan strain of cool, cerebral show-business class) dumps his long-time agent,...