The mechanism for rapidly kicking all others out of your house is to log off. Any time one is inadvertently disconnected that functionality kicks in. It's a definite thing and done automatically, for security purposes. I would not like to see anything changed to compromise that security. Can't you leave the game open over the time span you refer to and just occasionally do a tiny action to keep the AFK from logging you out? This is a broader question, but even if you are cast into Hell for AFK, wouldn't your home remain open to anybody who had been permitted in?