When you say shot........how much pad material was left? 2/32, 1/8 etc.
Rotors scorn, thicknes of them?
I would put in new brake fluid first if not already done
IF you play a lot burnin the tire with TC on, it will apply the brakes at times........I have seen a few C5s with toasted front/rear brakes at road courses due to the TC issue.
I have NEVER worn through rears first even when I do 100s of 1/4 mile track burn outs w/o a line lock
I have TC turned off 90% of the time
