The place to course correct is from the board room, not in public. If she had enough power to oust the CEO, she should have enough power to pressure him to make changes.
The board can't compel the CEO to do specific things, only replace them.
Of course they can. If Sam Altman is really as heedless about AI safety as the board seems to think, GTP wouldn't be so aggressively aligned.
A misaligned AI could act aligned in the service of its interests, just like an employee trying to steal from a company would act like a good honest employee. Methods for getting AIs to visibly act a certain way aren't necessarily sufficient to control advanced AI systems.