"Mr. #Altman 's departure follows a deliberative review process by the board, which concluded that he was not consistently candid in his communications with the board, hindering its ability to exercise its responsibilities. The board no longer has confidence in his ability to continue leading #OpenAI."

Corporate speak for: he lied

Real question is, if this makes them 'open' again in future, or not "... to advance our mission: to ensure that #AGI benefits all humanity"

https://openai.com/blog/openai-announces-leadership-transition