Sunny,
I have been struggling with the same thing lately! I have an angry outburst with T and then feel totally guilty. What you are feeling is normal. I think you should call your T to discuss it instead of worrying about it. Why suffer when you can just call him and settle the matter? Yes, T realizes that he should be able to accept your anger in therapy but that doesn't necessarily mean that he wouldn't feel better to hear from you. My T always says, no guilt here, no need to apologize. But I do and it does make me feel better. I tell him that I hate the fact that he is bearing the brunt of my anger that he didn't cause.

Maybe you could call him or send him a note saying, "I so very much appreciate you! I know you are bearing the brunt of my anger and I totally feel bad about this. I don't know if I should apologize or not, but I feel like I should. So, I am sorry. Thank you for being there."

Call him and tell him this or send him an email and end your worrying This is one time that there is something specific that you can do to end your pain, so do it! And don't feel bad about it

((((((((Sunny))))))))))