Nope! Just decided to be a disappearing asshole for 36 hours and come back like nothing happened.
edit: thanks to all for the different perspectives. he is fixed, has all of his shots, and has his own temperature contolled kitty condo (aka the laundry room) that we put him into every night. we have a pretty good network of neighbors and pieced together his activities via security cameras. he's a mouser for sure and that is his job until he decides to retire.
You claim that yet you also claim it is impossible for your cat to ever slip out of the harness. Which means you don't know anything and you try to be the expert with years of experience doing something wrong.
Grow up.