What to do with a rebellious and disruptive super-salesman?

A hypothetical case is developed in which an office automation firm must deal with the outrageous demands of its best and brightest salesman and systems analyst, a gentleman whose attitude in front of clients is charming and persuasive, but who rants and raves when management appears to be slow in fulfilling the needs of his clients. Eventually the employee flares up at the company's CEO and disappears, but still the executive is leery of letting him go because of the number of clients the firm would lose. It is suggested that the CEO learn how to harness the entrepreneurial talents of the analyst to make him productive within the confines of the company and to give him enough freedom to let his talents truly bloom.