Ok, I did a stupid thing a few weeks ago in my Audi A4, and wonder what to do about it, if anything. Except getting a lobotomy, of course.

I'm at very slow speed in 2nd, and an opening happens where I have to move fast. I slip the clutch to get the revs into the torque band and floor it. 291 ft. lbs. of torque takes over and the clutch slips constantly for at least 3 seconds, the car going nowhere. Disengage clutch, drop revs, gently engage clutch and light throttle and I'm moving again. The car then drives normally, as far as I can tell. The smell was horrible.
Since then, the car will take full throttle in any situation with no clutch slip that I can tell. That includes full throttle with the clutch engaged while in a tall gear and low speeds, supposedly the test for slippage. It may or may not be my imagination, perhaps there is a spit second delay in clutch engagement compared to before, however it seems to always grab.
Is there any maintenance I should do, or further testing, or if not, how is the best way to tell when its time to replace the clutch before the car gets stranded somewhere (ie; is clutch failure always gradual)?