I did it. It was mind control and brainwashing tactics for sure, they manipulated the temperature in the room to be super freezing or super hot, they “hypnotized” you, an amalgam of TM and The Secret. It is group think, and new age type of self realization stuff. It was a money making scheme with weirdos at the helm, as was a lot of that stuff. There is a follow up called The Forum. Friends of mine who kept going in it to the higher levels are quite judgmental of others, and think they know it all. And that bathroom thing I think was to show you hey if I can control my own body I can control anything....I think. I wouldn’t recommend it.
Your description is quite accurate.
I did it four decades ago to help keep a first marriage - it didn't work, both the marriage and the EST bit.
The program seemed to deliberately create a “us” vs. “them” attitude and only encouraged contact, and free volunteer work, with other estoles. This went along with an "I'm better than you attitude" as well as the need to convert the world.
A liberal neighbor recently finished the modern Landmark equivalent and with another friend we enjoy asking folks at her parties “what is Landmark?” - you can never get a coherent straight answer...:^)
OMG! They became liberals!