I know exactly how you feel. It seems that the changes don't matter, the WAS still views the LBS as pathetic with as you said lots of " nasty traits".
As long as they have OP in their life they are "motivated to look to the problems of the M as a way out of the R and not look for solutions". I pray everyday that R with Ow will end b/c this will give me the best chance of getting my H back in my life.
Detaching is so hard and yes I wonder all the time if it just relieves the WAS's guilt when the LBS finally does detach and move on, but on the other hand if you pursue and hold on they will run further away. I always tell myself that you can't control what H does or how he feels. He needs to figure this out by himself. The only choice the LBS has is to GAL and work on becoming the best person we can possibly be.