OWP for Spousal sponsorship cannot be delivered at the border, because one of the conditions is that you have a status IN Canada. When at the border, technically you're not in Canada and thus don't have a status. Several people tried to get it at the border and they almost all failed.
What you can do is wait until your current work permit is expiring in less than 2 weeks then apply for the OWP with your email receipt stating you submitted your application. There's a new public policy that enable you to do so without the AOR if your current document expire in less than 2 weeks (it is detailed at the bottom of the guide for the spousal sponsorship open work pemit: https://www.canada.ca/en/immigration-refugees-citizenship/services/immigrate-canada/family-sponsorship/spouse-partner-children/spouse-common-law-partner-canada-open-work-permit.html )
This way you'll have maintained status and can continue working as your current work permit will be maintained until a decision is made on your new request.
