I guess I missed that part. If you are not a PR but only on a work permit, you can re-marry your ex-wife and then petition for an open work permit for her but only if your job is a skilled job, class A, B or 0. However, is the wife you just divorced already on an open work permit based on your work permit? Because I am not sure you can have two. In that case, you may need to wait until you extend your work permit or get PR.