Yeah, I have gone into flashback in T before and confused T up with abusers while in that state... and definitely 'came out the other side' of it.

I guess it helps to remember that T did not actually retraumatize you.... you went into flashback and things got real scary and real confused, but all of those parts of you that know T and trust T need to remind the scared parts that T never abused you and abuse never happened in that room etc. Just reassure them over and over that the trauma was in the past, not in that room.

You have had a such a strong connection with T lately. T isn't the bad guy. Keep trying to remind those ones who get it all mixed up of that. From your post it seems it all feels really scary and mixed up at this point, but your relationship and trust in your T is strong and I bet you'll be able to regain that feeling again really soon.