Oh man, I can definitely identify with that. How can a usually lovely T make you so unbelievably angry? It was hard to find parallels in my non-therapy life because I don't think anybody has ever made me as angry as my T did on one particular occasion. (Maybe one other person did, and that was an extraordinary circumstance.) Is it because it feels safer to be angry if you know they are constrained by their therapist role? Is it because they know you better than most people so it feels like they should "know better" than to incite your anger? I just don't know...