If Fred Wilson dumped the stock because he claimed it was going to crash, this will be pertinent. As the linked article states (where he even uses the phrase "As good as the company is"), it was just his personal position that he prefers investing in companies that don't try to deceive its investors.
You can't knock Wilson for taking a principled position. Sure Apple has done well, but the reason he sold wasn't because he thought Apple would do poorly.