Is decentralizing the key to sales team success?

"Remodeling Your Sales Force" an article by Christian Marcazzo in Pharmaceutical Executive Magazine suggests a less micro managed and decentralized sales force where the managers are seen more as CEOs of their region. Decentralizisation means for Christian, not doing "busy work" such as sales reports but rather letting managers manage (not headquarters) and setting clearer and precise goals. To read his article and to learn more about his suggestions and ways to implement them: Click Here.
Do you think this "model" works? Or do you think it could lead to problems of not enough motivation or accountability?