My W would say stuff like "You'll be great for your next wife" all the time - it's jealousy speaking. They don't want the fighting, but don't want another woman to have you, especially once you start acting nice and looking good.
My W was actually the best friend of a girl I was dating before W. When we broke up I started going out with W and the XGF was PI$$ED! I asked W why she was so mad when she was totally done with me and her reply was priceless: "She doesn't want you, but she doesn't want anyone else to have you either." LOL!
Leaving, reading your first post it just sounds to me like you engage in a few days or a week of GAL and then want to declare yourself "cured", and you sound almost happy that your W seems to be reacting negatively to your GAL. This is a MARATHON. Slow your roll. Quit analyzing every little convo you have with W. I've been at this a long time (not as long as others here though) and through hindsight I can now see that all those early conversations and interactions I had with W meant NOTHING because we were both still cycling. It takes many months before you settle into your GAL and start to do things for you instead of W. Right now you're trying to convince yourself you're detached, but you're not even close yet. Be patient, stick with your DB'ing and try to quit focusing on W so much.