53. A director shall be liable under section 52 only in either of the following cases:(1) where the legal person has been prosecuted within two years after the date the unpaid contribution became due and full satisfaction of the amount awarded by judgment was not obtained upon execution;
(2) where the legal person was, within two years of the date the unpaid contribution became due, the subject of a winding-up order or became bankrupt within the meaning of the Bankruptcy and Insolvency Act (Revised Statutes of Canada, 1985, chapter B-3) and the claim filed has not been discharged.