What a practitioner does is his responsibility, and it is not our intent to review and pass judgment on each one’s claims or procedures. Even if you feel that some of these practices do involve uncanny power, it is clear that many who tried them did so in all innocence, with no thought of involvement in spiritism. It may have been just a reflection of their desperate desire for good health. Still, some who have been involved in such practices have decided later that any potential physical benefit was not worth the spiritual risk.
The main risk with many 'alternative' methods is purely financial. The benefits of such methods are often psychosomatic. And the only 'spiritual risk' of any of them is caused by the Society putting fear in the minds of its followers so that they are scared of endangering their spirituality by doing something the Society doesn't like.
Whether any particular alternative healing method works or not; and whether or not the way they work is understood, it doesn't mean people are being cured by those tricksy demonses.