Sounds to me that there has been a lack of a father figure or at least a strong male mentor. Getting drunk and disorderly at 11 could have been a cry for help or at least a massive warning sign that things are not right. You are going to have to try and engage with the kid and try and steer him down the right path. Little steps at this stage. Set some boundaries, practice what you preach. Does he ride or have any interest in bikes, could you get him to do a bit of all mountain or downhill gnarry stuff that might appeal to a sixteen yr old!
Just threatening to throw him out won’t end well, blood is thicker than water.