I'm glad this isn't your current T

A T who is so lazy as to go to a third party, and to someone who only knows you in one particular context, isn't someone I'd want to see. Yes, I'd be angry that he did this. It would feel like spying and like T not believing me and T not giving me a chance. Sounds like he wanted to take a short cut and possibly knew he had poor T skills to do the getting to know you on his own.