There's a nytimes piece about Mira Murati being the instigator of much of this, and convincing the board he should be ousted. Also at some point she flipped to the other side, championing his return (maybe due to the revolt).

Immediately reminded me of Succession, where [SPOILER]: Ken initiates a proxy battle for his dad's company, then rejoins the company and attempts to "diffuse the bomb he planted".