He isn't thinking clearly. I wouldn't try to look deeper than that, positively or negatively.
I expect the initial decision to file was an emotional one. Which explains the lack of though, and the errors. When you coutered, the emotion was gone, so he just let it go. He may well just be watching the calendar, can't really say, obviously.
So, if you want to try to save your M, and it will be a challenge, of course, you are going to have to look to yourself, for now. Do you have Divorce Remedy? Even in your situation there is useful stuff in there.
