This Kundalini concern is quite fascinating because I first heard about it in the 70’s reading Gopi Krishna’s experience. The link to pdf is provided.
Another important aspect of Yoga is that if Kundalini, which Gopi Krishna claims is at the heart of the discipline, is the energy responsible for spiritual experience and mystical states of consciousness, then two logical conclusions can be drawn: 1) all religious experience owes its origin to this source and 2) the systematized discipline of Yoga corroborates the basic beliefs of
religion which heretofore could only be accepted on faith. They are verifiable by personal experience. So, Yoga can provide a method that alleviates the discord and rivalry that exists between the adherents of the major faiths and also a foundation for the development of a more broadly-based scientific method that could reduce the long-standing conflict between science and religion.
Introduction page i …
light-weaver.com/vortex/pdfs/Kundalini.The.Secret.Of.Yoga.by.Gopi%20Krishna.pdf
What is lacking on this thread is an appreciation for myth, symbol and poetry accomplished in a culture other than our home Judeo-Christian, Euro-centric bias. God mad all of us. I have been practicing yoga, more or less, off and on, and not as much as could best benefit me, since 1976. It has been nothing but a blessing and the people I have meet through it have been wonderful. No heads spinning or projectile vomit, no fits of possession. If anything, and research supports this, yoga helps ease anxiety and depression. it is a healthy practice.
If one were to stop yoga out of fear of demons where does one draw the line? No more stretching in the morning? Before or after sporting event and exercise? After all, a toe touch is a toe touch. a twist is a twist.
Rather, I think God created us as temples of the Holy Spirit. Our bodies are awesome and miraculous gifts we need to care for. No one really knows what its full potential is. The REAL danger is to lose focus and make the body and all it can do our aim. The irony is that in yoga as well as in our own Christian spirituality the warning is to ignore and think nothing of unusual experiences that may come as a byproduct of our spiritual development.