The biggest thing that everyone tends to miss is you can not FORCE IT.
You can not FORCE a bond, or FORCE therapy!
Also, some 'camp' or 'program' will not 'fix' a person like a shop or a mechanic can fix a machine. A person is a person is a person, there is no black magic, voodoo, 'fixit' or whatnot that will just make him "work" like some person or entity (society?) thinks he should.
Well, that and "wilderness" has no magical therapeutic value. Its mostly used because its an extreme environment for city/suburbanite kids, offers great ways to push them emotionally and isolate them, make them suffer, and let you get away with doing things where they have zero contact with the outside world, and reduce the chances of running away.
The "wilderness effect" spoken of on ST is no more than a "program effect".
I am glad that you're willing to admit that its not all his fault, that parents share responsibilty for their children - but you can't turn to an industry full of quackery, mind-FUCK nonsense and greedy charlatans selling snakeoil to get help. You need to work on his terms, because its his mind and feelings and his issues, not force him using circumstance or a harsh, isolated environment where he has to rely on you or a group of 'counselors' with gay injun-ripoff names to survive.