Key TakeawaysLululemon Chief Product Officer Sun Choe resigned as the company announced an organizational restructuring.The fashion workout apparel maker said it would not replace the CPO position.Shares slumped to their lowest level in more than a year Wednesday. Shares of Lululemon Athletica (LULU) fell to their lowest level in more than a year Wednesday, a day after the maker of fashion workout clothes shook up its organizational structure and announced the departure of Chief Product Officer Sun Choe. Th ...