Dragon, previously you asked me for a teacher suggestion on another thread and I did not respond because I did not want to distract from the topic. You also wrote about some people you have been associating with so I know some background information.
My suggestion is that firstly:
you cut off ties completely to that shady group of people which you've associated with in the past
you contact several respectable lamas, tell them you have associated with that group, ask for protection from the ghost and it's cult, and then follow that lama's instructions.
I suggest you contact Gaden Shartse Monastery's Abbot Khen Rinpoche Jangchub Choeden directly to ask for protection and that you speak to CNNR's through his students at http://tsegyalgar.org/
because they know how to handle this situation. It would be good to reach out to others also, this is not an unusual problem and lamas will be sympathetic and understanding.
Following this first set of suggestions will separate you from the malignant influence of the cult.
Secondly, I suggest:
that you take vows and empowerments only from lineage heads like His Holiness the Dalai Lama
that you take as a teaching authority only the sutras, tantras, and valid commentaries
Following this second set of suggestions will spare you from falling deep into a cult like the one you have previously associated with.