I have met Jose a few times, he was instrumental in starting the first Whole Earth Festival at UC Davis in the seventies and part of the American Indian Movement group at the time. I decided just for the hec of it to read and participate in 'doing' his calander, ie: finding out what I was etc... with his game. I did find an interesting shift in my own consciousness when I 'did' the game and looked at the third dimensional vs fourth dimensional perspectives through his viewpoint. Interesting things always happen around Jose, most likely due to his way of seeing the world. He echos what your group above seems to believe.
I particularly liked the analogy of third dimensional density to an old LP (vinyl album) where linear consciousness travels along the plane and the shift into fourth dimensional consciousness turns the slice of a plane into a whole sphere. Some people stay on the plane, as that is all they will intentionally experience, and others begin to relate to life in the sphere. Of course in reality this is really a third dimensional model, more like a pointer to areas encompassed by the sphere, but not visible. However, I found it useful to explain a wholistic view of life at the time. Because the model takes physics and astronomical events into mind, it points to the idea that as physical beings we are interconnected with the whole and when shifts in actual bombardment of energies due to galactic shifts occur -we experience changes in consciousness. We are coming to a major 26,000 or so marker and many others, such as Dane Rudyar have noted this. It will be the 'end times' for some, Jose says, and not for others.