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.