Agreed, raybennett. I would add that deep shadows arise in every stage. As long as we are in duality, i.e. manifestation, there will be darkness wherever there is light.
The specifics vary a good deal from stage to stage, but, as Ken Wilber pointed out, “the Darth Vader move is possible at every stage” – even up into Second and Third Tier. Which is why we need to be doing our own shadow work all along, and we need to be alert for it in our communities.
Chogyam Trungpa was an alcoholic. He did not address it and his community enabled it. The unacknowledged shadow deepened in his two successors. This is not the only spiritual community in a revered lineage that has gone off the rails in this way.
Let us continue learning from experience, and be alert for energies and communities that need to compost their s*** into fertilizer. It’s hard work, and sometimes it stinks, but anything in manifestation can be transmuted. Fortunately for us, we have some well tested techniques for this. For anyone who is unfamiliar with this process, I highly recommend the “Shadow Module” chapter in “Integral Life Practice” by Wilber, Terry Patten and two other authors.