Would a wife reeeeally not be able to recognize her husband (headless or no) and probably whatever bit of their house happened to be in the shot? None of his shorts were in the shot? What did he take it at work or something? I suppose it's possible but I dunno.
"Honey... that computer chair sure does look familiar..."
Then again I guess the culprit is hiding in the last place you'd ever look. Mental blocks persist.