When Doug and Deacon are outside, Carrie comes out to talk to them. She quickly goes back in saying she's cold and clearly shuts the door behind her. When Doug and Deacon go back inside, the door is wide open.
When Deacon and Kelly leave Doug and Carrie's house, in one closeup shot of Doug seated on the couch, a shadow, light flickering, and a shoe can be seen briefly on the stairs in the background. Arthur isn't in the scene at all, so it must belong to a crew member.