What about proving the felony in court and make him pay for hurting shareholder value?

The upside of following courts and presumption of innocence is, you can tell your next CEO, "This won't happen to you because you'll respect the law, and what's more, if you respect the law we'll even respect the presumption of innocence and keep you in your job much longer than at Mozilla's and GitHub's. And you'll be clean of controversy when you leave, so it will be much easier for you to jump on an even bigger CEO position."