I'm a little late to the thread, but another option would be to temporarily move someone else into the house from neighborhood view with the combine household option or whatever it's called, play the lot and use a teleporter to summon them back if they don't just arrive on their own after a moment or two. May need to use a cheat object to add them to move them in again if they teleport in as unselectable.

http://www.moreawesomethanyou.com/smf/index.php/topic,8266.0.html

Took a minute but I found it.