Turns out he was back between the wall and the sofa...just like the old potato chips...a bit dusty and disheveled, but still not spoiled.
So now he is definitely found, he has been recovered, no question about it whatsoever. His whereabouts are now crystal clear. His location is known. His coordinates are in the log book. He is no longer lost. This means we can put that other fecking thread to rest, okay?