I had a situation where my pdoc left a practice, except I wasn't impacted by it. Other patients were however and we're pretty upset. He told me he was going into private practice about 3 months before he was scheduled to leave. He said I could go with him so I did and there was no issue.
About 2 months later I got a letter from the hospital he saw me at previously, apologizing profusely for his "abrupt departure" and not giving referrals. They provided the names and contact info of a other doctors at the hospital. I was confused because the letter did not reflect my experience at all - but apparently for the patients that didn't go with him, it did. They were likely upset, complained, and the hospital handled it the way they should have.

granted this Ts circumstances are different, but regardless, his clients deserve some kind of follow up from the practice. I understand the desire to contact other clients in this circumstance since there is conflicting information and the OP was left hanging. And so long as the other client don't mind, they can talk about the T and what happened as much as they want. Clients have absolutely no obligation to protect a T's confidentiality.