It sounds like you are in a very difficult situation. First you have to think what is best for your child. And only you can determine that. IF you choose to keep your ex inyour child's life then there must be some changes. The way you can determine that if it is the best thing for the child, is if you child has a good relationship withhim. You would not want to be the one to take you ex from your child's life; your child may resent you for it. But you do have to find a way to handle it so that you are not stressed. First, have you considered court mediation? Throughthis process you can set forth standards of how your ex visits your son. This includes not having his family contact you; call you, or any of the above difficult things that you mentioned. Since it is a court document, that should not violate it. I also think that you two can benefit from co-parenting counseling. This is counseling that would teach you two to learn how you can parent together without it becoming stressful. As counseling progresses your current partner can come to counseling todetermine how he best fits in the picture. So that all parties can get along. IF you chose not to have your ex in your son's life. Then you do have that right. I understand because you do not want to be stressed out by these situations. Iwould first try the above things before cutting off all communication. It may be really beneficial to try counseling and mediation first, to see if you two can get on the same page. As for your son, your son will see his father for what he really is, if his father is given a chance and does not take it. You do not want to remove his fatherfrom his life, because the child may come to think that it is your fault thathe does not have his father. You really want the child to see this for himself.