How about sending him to a bonafide wilderness program that doesn't have any "therapy" involved, e.g., Outward Bound or similar? First of all, these people know what they are doing out there as far as survival, inherent dangers of hypothermia and how to recognize it, etc. and they are not going to be taking any stupid chances regardless of anybody's "attitude." Second of all, the pluses of being out there in the elements and doing it on your own steam that convey a sense of accomplishment in the kid are not disguised as being anything different than what they are. They may even have some programs where parent + kid go together?