wow, 1st i am so sorry that your ex is so bitter. Sounds like she really enjoys haveing her sons life miserable. I think you are doing everything you can right. The only thing I can even remotely suggest is maybe, letting him move back in with his mom. You will have to tell him that he will have to be in afterschool care, since 11 is too young to stay home alone. Not sure it would help, but maybe being with his mom all week, it will allow him to see that you are not out to ruin his life. Again I am not sure that this will help, but it might be worth looking at.