Wow - that's amazing. Good for him finding his way home again. I find it interesting how cats seem to get temporary amnesia.... my Koji, who is an indoor only cat, once got out through a hole, basically in our foundation... was only out for one night, but treated us like dangerous strangers for 1/2 a day. He came back in through the hole he exited from - which we promptly boarded up tight. We knew exactly where he was and even coaxed him out once. I got a hold of him and everything, but yup as soon as I tried to move towards the house he totally freaked. I did not get bitten, but he thrashed around and gave me a pretty good scratch on my nose.