Back in the mid-70's, I ran into an early incarnation of this program and the outcome was rather amusing, but potentially nasty.
Their program was pushed out as an "offshoot" of the Esalen Training System (which the EST people fervently deny). and they did, at that time, "immersion" programs, where you did not leave the room for something like 36 hours, not even for breaks to hit the plumbing, which we were NOT told about prior to the doors being closed, locked and "kept" by two rather large and imposing individuals.
The "facilitator" then entered and told us that we were all A******s. and that the program was designed to help us overcome being A******s. When someone asked about bathroom breaks, they were told, unceremoniously to shut up, sit down and stay put and that they could go where they sat if they needed to!
Needless to say, at the ripe old age of twenty-something and having fought in a few tournaments and real encounters on the street in my life, this did not sit well with me. I had been housebroken for quite ome time by that stage of my life!

I stood up and said, "I would like to leave, then, as this is not for me." I was told to "sit down, shut up and pay attention, A******!" I'm not a big guy at 5'8" and back then, fighting weight was about 150lb.
"So, you are saying that you are going to keep me here against my will?"
Again I got the same response that I got before. This did NOT sit well with my Scots/Danish temperment. At all. I headed for the doors at the back of the room. The two imposing people moved to stop my egress.
I turned and addressed the "facilitator," "Tell your people to move, please. I am leaving." I was again addressed with profanity and told to sit down.
"We can do this where I walk out the door by myself or we can do this were your two friends leave ahead of me, at speed. It's your choice. Sir." I placed a hand on one of the chairs and twirled it on one leg for emphasis.
Needless to say, I left, unimpeded. Some folks just do not like the idea of having to deal with what I call "chair-jitsu," I guess.

So, if you get an invitation from this group, I understand that they now allow breaks to use the plumbing, but they still practice the rather abusive and pushy methods to get people to sign up for increasingly expensive programs.
Let the Buyer beware!
Lee Darrow, C.H.
http://www.leedarrow.com