860. A person who is convicted, on indictment, of an offence under section 856 for acting in accordance with the directions or instructions of another in contravention of that section shall, if the court determines that it is just to so order and orders accordingly, be personally liable, without any limitation of liability, for so much as the court specifies of the debts or other liabilities of the company concerned incurred during the period that the person was so acting.