Dan are you sure your rotors are warped? Everything I read about the Cool Carbon pads leads me to beleive they were the problem.
They worked at Infineon because it was 20 deg cooler and you use less brake energy because it's a slower track. Try the Hawks, heat them up nice and good, and see if you can repeat the issue.
I like the video...that blue WRX didn't give you much room to pass
