I guess it's possible that this temporary shutdown will lead to increased output that negates the lost week of production, but as Elon said he's decided to replace robots with more humans, I don't see how that will lead to an increase in output to the 5k/week rate he's said they will achieve by the end of June.
If Elon sees that some robots are the bottleneck, and using humans in place of those robots will reduce the bottleneck, then it will increase production. It depends on how bad the bottleneck is and how much it can be alleviated.
For example, let's say that there are frequently issues that come up with installing the doors on the frame. Something further upstream is putting together something that is technically within the tolerances of the spec but not perfect, but a robot downstream that is putting the doors on can't deal with a percentage of the items that are on the fringe of what the spec says the tolerances are. Those errors are being handled manually, and the line significantly slows down whenever one of these issues crops up. What do you do?
1. Retool the robot upstream to force it to have tighter restrictions on the output.
2. Retool the robot to compensate better for the differences from the desires and the actual result.
3. Remove the machine that is hitting the problem from the line, replace with human workers who can make adjustments on the fly.
#1 may be impossible, depending on just what that machine is or how much the tolerances are off.
#2 may be impossible, depending on just what is wrong. It's possible that updating that robot
#3 is likely the right thing to do. The humans can easily make judgement calls to determine if the tolerances are actually off by too much, or if they can compensate in some other way. This will be the human's only job, so they won't have to wait for proper safety shutdown of the robots before they can jump in to manually assess the situation and make corrections, then restart the line. Additionally, perhaps if this robot is removed from the line, the cars can be removed from the line and moved to another location nearby, where there are parallel teams working on the cars as they come in. One robot within normal tolerances may have been able to output 10 cars per hour, and it will take a group of techs 25 minutes per car. But you take each car as it comes down the line off, wheel it somewhere else, have as many crews as you need to output at the original rate, and someone else to wheel them back to the line to push them back in. Parallelize the manual process. You can't parallelize with the robots unless you have multiple robots set up at that part in the line, and buying a new robot and installing it is probably not going to work because the rest of the line might need to be moved.