Whether or not the T was professional, I think it may be worth looking at all this in depth, given your own reactions and sensitivity to it (including what you perceive as "subtle hostility" now). I am saying this because my last T shared a lot of personal things with me, including health problems, and how he anticipated those health potentially interfering with our interactions once. I did think that he sometimes overdid the self-disclosures (and brought this up once in a general way) but never felt the specific, strong reaction to them, or one of them, in the way you seem to. I cannot imagine any therapist being perfect and never making mistakes - what I do think is that it's interesting what sorts or errors we clients react to specifically strongly in such a way that we can't let go of it and we relate other things to them. In my experience, looking at these things (with the T or alone) can reveal interesting things about our own values and specific sensitivities.

Anyhow, I also hope your session goes well.