They likely violated RICO by essentially nuking the company's valuation and trying to sell to Anthropic. That is a crime, by the way, so they don't seem above that.
They haven't given even a clear reason for firing Sam. "Not being candid" with no evidence doesn't sound like it directly violates "the charter", but you can really argue anything when you're just "interpreting" the charter.
Anyway, you can make infinite excuses for their actions and justify them infinite ways. Hopefully you agree that the current situation is a giant mess, and it's caused by their narrow misguided interpretation of their job, and it's at the expense of basically everybody else.