As far as moving his sh!t out of your garage, I would definitely refrain from saying this: "How about "Hi Dan, I need you to remove the remainder of your things away from the garage soon, so I can get the car in again. Let me know when you you will do that, thanks Bbj"
WTF is that?? "Soon?" Soon is an open-ended ticket for dan to keep jerking BBJ around.
He needs a very hard and fast deadline to get his sh!t. Period.