Well, the article you've shared has specifically to do with cultic groups that use some variety of ideas from psychotherapy as a tool for making members dependent on them, however I think that's quite different than the idea that the article Bud shared presents, which is that a cult-like environment can be fostered even in individual therapy. I'm sure that author has had equally valid personal experience which has given him the perspective he presents. (And personally I do not see any particular suggestion evidenced through his writing of his being in a cult, although if he's had that experience it could certainly have enhanced his perspective -- not invalidated it...)

I have a friend who is totally locked in to a relationship with someone who doesn't work, who claims to be a psychic and requires him to go through all kinds of hypnotic activities, chanting and the like, and who dominates him to no end. He works three jobs and sleeps in his car, while she kicks back in a giant house that he pays for. I consider him to be in a cult even though it's a cult of one, in a sense. Which is just to say, cultic realities can be manifested in any situation, and certainly someone who is looked upon for psychological direction is uniquely positioned to take similar advantage should they be so inclined, even if their only objective is the receipt of a client's dependence on them.