Hi Jillian,
"Analytic fallacy" is a technical/philosophical term. I've just looked up the definition to be sure I'm getting it right. It means "The results of an analysis are interpreted as complete in themselves, apart from any context." I'm just guessing as to the rest of it, but I can relate to feeling like I'm essentially flawed! Could he be saying that you believe your mental illness is the result of an "essential flaw" - something that's fundamentally wrong with you or your fault, rather than seeing your issues in context (maybe the result of abuse, biochemistry, or other aspects of your history)?
So, my idea is basically the same as incognito, and I'd agree that the only way to get a definite answer is to ask your T.
I don't know you or your story, so I'm just throwing my best guess out there! I hope you get to the bottom of it. I would find it unnerving reading something like that!
Saka