I wouldn't call it a relapse. Maybe a slip of the mind, since you went back to your will and not God's will.
Do you do step 10? That's a spot check inventory. It would've helped you in the moment see that your will wasn't aligned with God's will.
Also it helps to "pause" like it says to do in 10/11, to catch yourself in your thinking before you take action.
Don't beat yourself up over it, though, because the book says "when" our character defects crop up again... not "if".
I admire you for talking to someone (SR) about it, like step 10 says to do. You caught it extremely early so that's great. I'd take it as a lesson to get back into living in 10, 11, and 12.