I'm not sure why you even know about your ex-Ts other clients identity much less bring in communication with them. Their relationship with him and their communication with the clinic aren't anything to do with you and second guessing what's going on is hurting you. They may have wanted to be clear with you that he isn't coming back to work because they didn't want you waiting for something that isn't going to happen.

You aren't responsible for your Ts lack of boundaries, and from what you've said here it sounds like his professional boundaries were terrible. You are responsible for your boundaries and how you chose to move forward. Ironic that you're worried about new psychologists possible reputation for malpractice given your experience with this ex-T.

I know you're really hurting and it's awful that he's had to stop working but that's about him and his home life, which will always be more important than his professional life. It's not about you.