My opinion but no way they are going to stop making new cars to fix those alteady made. They will blend them back in..you have a production process designed to make a complete care and there are a lot of people and processes supporting that production process...they will not idle 98% of the process to fix one off problems.
Would they be sending newly produced cars to lot 51? or has the issue been corrected?
Is there a chance that customers that ordered their car in May (after the hold began) could take delivery before those that have had their cars built since April???