Oh I can absolutely relate, and my feeling is, you did just the right thing. Short of threatening or comitting actual harm, I see little that shouldn't enter the therapeutic relationship. These things *feel* uncomfortable but are like gold to our therapists, incredibly valuable for understanding relationship issues and for highlighting important and sensitive topics.

I've had issues like this and also felt volatile about it after, and regretful, but... I don't think I would change anything. My therapist needed to hear me, and wasn't, and though I don't condone being rude deliberately.... it was good it happened and changed our dynamic for the better after.