CTC's standard is very high. Remember that only 2-4% of people who apply get selected for the course. I remember being told at phase II that if you don't pass, it doesn't mean that you can't be a pilot. All it means is that you weren't good enough to meet their high standard. Pilapt is a test run by a computer that churns out a raw score; the score given by the computer is only of any use if it is interpreted by a person. i.e. The team running selection determines the pass mark, as it were.
Therefore, you may well have the raw ability to pass the selection tests of another FTO that has slightly less stringent standards. Don't give up; remember that there are plenty of excellent schools out there besides CTC.
Jamie