Buffett heir apparent quits after stock purchases (ZT)

http://finance.yahoo.com/news/Warren-Buffett-heir-apparent-rb-2514820140.html?x=0&sec=topStories&pos=main&asset=&ccode=

"One of Warren Buffett's favored lieutenants, who was seen as his leading heir apparent, resigned after buying shares in a company he then repeatedly pushed Buffett to acquire."

Is this stupid or simply greed? I think these rich people should exam their heads now.