Hi LIO - Do you normally communicate over email? Have you both emailed and called on these topics? (Not necessarily recommending that you do, just wasn't clear from your post). With the furniture my instinct is to say sell it if you haven't heard from him and the deadline you gave him has passed BUT if he filed for D you will want to tread lightly on any issues of joint property or things that will cause problems for you through the D process.
He is probably still down about having had you see his apartment in shambles, as well as your big emotional conversation. But, MINDREADING, we can't know what his deal is.
For S, I would email him very clearly that you need to make a decision by X date for enrolling him, and say that if you do not hear from him by Y date, you will be enrolling him at Z school.
