I don't know, either, since there weren't many details. The idea was to bust the union, so that their strikers wouldn't keep striking if they all lost their jobs. Maybe the stores would close permanently, and new stores (under the same owner) would use the old locations.
The Teamsters don't like this strike at all. Apparently, they're not getting strike pay, and some still remember that the grocery store union didn't support the Teamsters when they were on strike.
My neighbor is one of the striking teamster's that recounted this little bit for me.