Hopefully you will eventually come to realize that he is not the cause of your problems, he is a "result" of them. Your problems stem from your W going through something. It's mental and emotional, she's confused and in turmoil and making extremely poor decisions because of it.
Rarely do this things happen in a vacuum. In the vast majority of cases that LBS's behavior was a major contributing factor. If they don't recognize and changes for the better that there is no reason to recon.
Yes there is the odd case where the WAS just goes of the deep end.