Yea that is definetely the clutch. With the abuse it has taken already it's only a matter of time before you are left stranded. I would look into purchasing a clutch today, (not trying to run a sale pitch on you). You likely burnt up your flywheel too so you will need a new one of those.
Please do your best to avoid slipping the clutch and burning it anymore if you want it to last a little longer.
My guess is the clutch slipped so bad there was no load on the engine and you probably under-boosted target, no big deal.