You know something else I just thought of after reading what you wrote..... If you were to write to the judge, the judge might just misconstrue your message and think that YOU want to "help" your son and be very involved in his life. As in your son coming to your home. Shudder! I would never want that to happen! Susan, I can still hear the hope you have for your son, the desire for him to get better. I know it's hard to hear and hard to accept, but he's not going to get better because of ANYTHING YOU do. If anything, and he's proved it to you time and time again, he will remain an addict because of you and your desire to "help" him.
I wonder what would happen, if you removed yourself totally from his life? No phone calls, no visits, no help, no interest in his life, no nothing! I can still love somebody, but not be involved in their day to day life. Would he care enough for you or his family to clean up his life?
In case you're wondering Susan, your son is not an addict because you were a bad parent or because you did something wrong. It has nothing to do with you at all. Sometimes we like to blame our selves for our children's problems, but it isn't so. If we do that, we stay stuck in the same place and we can't grow.
Your son is an addict because HE made some bad choices and right now, those choices are too comfortable for him to want to change. He has to want to make changes. You can't convince him otherwise. Keep reading and learning Susan.