As I understand it he was raising on an internal issue that was generally accepted as open for discussion (hiring and quotas). I think likening it to "mailing a manifesto out" is a deliberate mischaracterization.
This article is the first I've seen on this memo and by the spread of it inside and outside the company that's what it appeared to be. I'm not trying to mischaracterize the issue. In fact, I don't have all of the information.
