Just a VERY friendly reminder that trimming extremely thin objects on the SawStop is a ridiculously bad idea.

I have no idea how that did not set the safety off. Please use the bandsaw if you are trying to shave a little bit off.
Additionally....

Using a square or any piece of metal as a shim is insanely dangerous. What the hell are you thinking??
To whoever pulled that stunt and then hung the square back up: Get caught doing this again and you will be forwarded to the board.