I read she doesn't play golf and doesn't care about being a "Green Jacket" wearer. Also, I don't think the head honchos even had that in their heads when they chose her to be their CEO. Her decision if they want to keep participating as a supporter of the tournament or not and I dont think Augusta officials really care that much, many other companies would be honored to step in IBM's place.
As a guy, I dont understand why woman always want to be in a mans club. Just like Danica Patrick wants to be considered a challenger in racing and wants to be treated equally and doesn't like it when she is referred to as sexy. Maybe she shouldn't pose in a bikini leaning on a car? You want to be taken seriously, they leave SEX out.