OpenAI's board faces backlash from investors and employees after removing CEO Sam Altman, with Microsoft CEO Satya Nadella reportedly furious and offering support to Altman. Venture capital backers of OpenAI are potentially considering a lawsuit against the board, including Khosla Ventures and Reid Hoffman. OpenAI's top AI researchers and executives are resigning, seeing the situation as a power struggle between board members and Altman's commercial ambitions.