beauty, Here's my opinion, based on going through the same situation.
He's lazy, and filed just to prove something to OW. Most of our spouses on here have done similar things. I found an e-mail from W to OM saying "I filed, does that mean we can date now?" She never intended to really go through with it, and just let it expire after the 6 month time limit. Hang in there.
As for family, I wouldn't rock the boat unnecessarily. Don't they want to see their grandchildren though? Please keep hanging around and fill us in.
Me: 30 W: 28 T 8, M 6 S: 7-27-2007 W filed (again) 3-2011 Served 8-2011 Responded, now dark "I have decided to stick with love. Hate is too great a burden to bear" MLK