I am so sorry to read this. What can you do? W simply wants out and that move to another state is a pretty bold statement.
Although I have to say that 25's husband went Alaskan and stayed away for 2 years. Granted, they had kids which forced them to communicate on logistics and issues as they cropped up. With you, there are no "ties" between you two that would force you and W to communicate.
Tough. I know.
Take care of yourself. Being around friends at this stage will do your PMA wonders. Nothing like being around friends and family during very trying times.