My 16 year old son has had some minor(ish) behavior problems in the past. Mostly fighting and lying. In spite of that, we had a great relationship and he seemed for the last few years to be turning things around. No fights, his grades were coming up, he was in a college prep program and looking at colleges. Then in August he tore his ACL, MCL, and meniscus playing football. His whole demeanor changed. He just laid in bed all of the time and didn't hang out with the same group of kids. We chalked it up to being depressed over his leg and not being able to play sports and tried to support him the best we knew how. In the beginning of December, he was caught smoking and selling marijuana (by us, not the police). We took his phone, social media, etc.. and began to actively control who he talked to and socialized with, as well as question where any money he had was coming from. His grades were coming back up, he was back hanging around his old group of friends. Things seemed to be better. Until Tuesday when he came home sick from school and our house was broken into. I just had a mom's feeling (intuition) that he had something to do with it. So yesterday my husband and I drug tested him. He failed for pot and opiates. Not only did he fail, but when he was in the bathroom taking the test he tried to dilute it and was caught so we had to go buy another test. He has a father who is not in the picture, and my husband has been his dad since he was a few weeks old. But I want to send him away to go live with his father and wash my hands completely of him. He still claims that he had nothing to do with the break in, but I find that so hard to believe. I just dont know what to do. Is there anything I can do to make it better or am I better to just write him off now before he ends up hurting himself or someone else. I have an 9 year old daughter that I need to be protecting.