Post-graduate publication, adviser is not in my field
Option A:  Blow him off.  You did your Ph.D.  You're done.  Work for your current employer and to feed your family.  The academic rat race is not your concern.  And it's not even like this guy cares about the science being lost. He just wants another sticker on his helmet (pub count).

Option B:  Tell him "what's in it for me".  Maybe get something out of him, like inclusion as co-author on a review or the like. 

Option C: Write it but tell him you will be the communicating author, you're in charge and not interested in edits from him and he can just ride along for a pub count (maybe a little gentler stated than that, but that is bottom line).



When I was in this situation, I went with option C.  But I actually cared about the science getting out and had the paper ready to go, no issues.  Also my advisor never messed with my text (I never had an edit from him on previous papers).  [And even in this case, it only came after a year or two of the guy, sitting, before he came back and agreed to my terms.]

I would probably go with C for you. But make it clear to him who is in charge.  Some of these professors are not used to grad students that take them on.

You probably will never get satisfaction on the previous slight, but if you tell the guy "I wasn't happy with how you handled X.  That is behind us.  But I have to evaluate if I can trust you going forward before doing any work on Y." maybe he toes the line.  He may not, so then put him in deep freeze.

I can't promise you a great outcome.  But I do know if you don't sometimes stand up for yourself people will take advantage.