Fairly recently, someone changed the locks on my own shop building (which I had rented out, and the tenant had then died, leaving his brother to lock me out). I’d had shop-cats, and the cat door was still there. I managed to get my head and arm in through the cat door and open the man-sized door from the inside. Then it only took about 5 minutes to get myself back OUT of the hole… whereupon I changed the locks again.
Fairly recently, someone changed the locks on my own shop building (which I had rented out, and the tenant had then died, leaving his brother to lock me out). I’d had shop-cats, and the cat door was still there. I managed to get my head and arm in through the cat door and open the man-sized door from the inside. Then it only took about 5 minutes to get myself back OUT of the hole… whereupon I changed the locks again.