Dop -
I am sure you know this, but I will tell you anyway. That is manipulation at it's best. That is the kind of thing (different words of course) that I used on my mom all the time!!!!
You are right no-one knows how low someone can go. Just because you can't conceive them going any lower does not mean that they can't.
sorry that you are going through this. Use your tools, you know it has nothing to do with YOU!!! Pray for him and pray for yourself. Do something that makes you feel good today!!!
I hope you have a good day