The best option at this point is to talk to some large male friends or relatives and ask to help you straighten him out. At some point you have to think "outside the box". This man is dangerous and the law let you down. Take a self defense course, buy a handgun, aggressive large dog ect.... My heart goes out to you because I have followed your story with this nut job. Maybe talk to one of his family members about his problem? His family probably has some idea that he has serious mental health issues. No one this sick can hide his mental illness from everyone.