1) Sure, but this wouldn't give him any protection. On the contrary, there would be a ton of extra liability and exposure if he were to refuse to process a levy.

Shares don't need to be held in a brokerage. There's always a process to identify and seize the property in question.

2) There's no such thing. TSLA is a US public company, traded on US exchanges. It's simply not possible for shares of the company to exist outside of US jurisdiction.

You can obtain paper copies of your stocks. Then they could be on Mars if you'd like.

Just having a share certificate doesn’t make it s bearer form. The corporation would have to set up this ahead of time. I don’t know the status of Tesla shares that he owns but it would be very weird if they aren’t registered securities. It would also raise a ton of questions if they started issuing bearer shares after a court injunction.

Stock certificates can be voided and reissued.

Tesla being a Delaware corporation, it would be within the power of the chancery court to order that very thing.