It seems to me also that you did what was necessary for gestalt therapy: you expressed your true feelings. If you were never allowed to do that growing up, it probably will feel very uncomfortable to you for awhile. It gets easier!

There's nothing wrong with refusing to rephrase something if you don't want to. However, it's interesting that you mentioned this was the only time you've ever defiant toward your t. There may be some pieces of insight for you if you look more deeply at the interaction. What was behind the defiant feelings? What was it that enabled you to take a firm stance in this instance, when that is not your usual pattern of behavior? Was there something you hoped to accomplish by your refusal?

Interesting stuff. . .