To S
I'd strongly sugget getting an exit counselor for your son asap.
You are doing the right thing to be supportive in the meantime, and gathering as much info as possible.
Please read also, please, under message board of Large Group Awareness Trainings and Manipulating the Environment.
The control of the environment, food, fatigue, etc of the Intensive causes a diminishing and then
Forum:
"Cults," Sects, and "New Religious Movements"