Delete Child Support Arrears

My ex-husband was arrested for non-payment of support. Now his family is pressuring me into deleting the arrears so he can have a fresh start & begin regular payments. I don't want to do it because I know he will not pay. My question is, is there a loop-hole where it would not be an available option for deletion of arrears?

I'm not going to delete them, but I'm afraid if my child's paternal family find out that it was my decision that they will be angry w/me and my child will suffer for it. Even though it is my ex-husband who is the source for all of this w/his lack of responsibility.