This crack was caused by user error (saucepan handle was not fully in oven when door was slammed shut). Removed oven door (watched online video to refresh memory), disassembled oven door (keeping track of all the screws), CLEANED all the pieces (it was really filthy), reassembled in the reverse order, and then reinstalled oven door.
This was not difficult and required only one screw driver. It did require plenty of counter space and careful attention to detail to keep track of the screws and ensure that nothing got chipped or broken during the repair.
The repair itself was straightforward. The deep cleaning was what took most of the time. I was also thrilled that I ordered the part on a Wednesday afternoon and it was delivered to my house the following afternoon.