Let's take a step back here: Facebook threatened to have a security analyst arrested for demonstrating and promptly disclosing the full extent of a serious exploit in a non-destructive manner. Whatever other behavior he engaged in that was unnecessary or ineligible for the bug bounty program, that's incredibly unethical on your part. Especially so, because you clearly didn't believe he was going to do any damage to your system or you would've actually called the FBI instead of someone he worked with.

So, you just wanted to cause him reputational damage and personal problems as an act of petty retaliation. You're right on some of the technical issues here, but in terms of ethics, your behavior has been far worse than his. I don't think you realize how much long-term damage you're doing to your relationship with the wider security community by threatening to jail people who were at no point acting maliciously and at no point caused any damage.