Countertransference happens. It got to a point years ago that I finally said to my T, "I've looked inward and thought of everything, and I don't think our ruptures about neediness right now are totally coming from me. I feel like you can't stand my neediness because this triggers you, but you want to but can't control it." He said that it was true, that he had issues with his mother. It was really healing when we would have a rupture and he would own his part if he had a part. It helped me learn to mentalize or try to see myself through the eyes of another. It helped me learn that arguments are usually two-sided, with both parties issues being involved.

That being said, he did tell me he was having transference during our termination. I think his countertransferece was the worst it had ever been. Things got pretty intense, and I was disoriented for most of it. So, that was not helpful. I'm glad he told me so I know, but it was so terrifying I'm sure my stuff was flying around also.
He told me he had to set more boundaries so he could continue to work with me. He was inconsistent. I was escalating. God was that painful. It still is. I still care about him.

So, to answer your question, no, it's not healthy for a patient to have sessions with a therapist who is experiencing countertransference that is out of control. In fact, it can be majorly damaging.

I didn't go about changing anything because I was too disoriented over the summer and totally didn't understand, or didn't want to understand, what was going on. I still don't fully get it. I was still dependent on him, though, and I still somehow idealized him because he could make me feel safe, so I turned the anger/hatred inward to try to preserve the relationship. However, that failed miserably. That being said, I am better than I was even a week or so ago. Progress

BTW, why is it that therapist get to have countertransference, that they always have a reaction to us? When they come in with their own stuff, isn't it just plain transference? Just wondering.

Thanks for the great question and letting me tell my story for the ten billionth time. I appreciate you lots