Presumably they aren't going to tell you the details so your imagining how he will react and what he'll say and how it will go down is your anxiety and "you" thinking about it rather than what will happen (since it is in the future anyway). You might feel a certain way if someone confronted you or if you had to confront someone, etc.

I presume you don't see this guy anymore, ever? I would just let the new T's do whatever and discuss with him whatever and consider it "none of my business" as you aren't part of the conversation so can only imagine stuff yourself. I can imagine how it would be difficult to think about and how its reminding you of unpleasant memories, etc. is hard. I had a senior group T confront my T while I was still seeing him and what was good about that for me was I focused on the fact that my group T was caring for me and looking out for me and truly helping! See if you can focus on the good things there might be in his being confronted instead of about him and what he might go through since you won't really know that firsthand. Stay with "yourself" in other words, and what is good for you.