Indeed - My first guess was that they went to test the B Mode and found the projector bulb had blown, or something, and it was gonna take more time than desirable to fix. Maybe they had to wait for a shipment. Would be weird, but not impossible.
It doesn't take a lot to print out some cutouts like this and get busy with a jigsaw, but I *have* to think they only went to the trouble because they got caught in the middle of something going ridiculously sideways and this was the shortest distance between them and running the thing.
Hopefully in the next few days we see a serious uptick in show quality - even if that just means using the intended B show.