On my CFI ride the examiner put the c152 in to a spin in the landing configuration (full flaps). I remember thinking, "Hey, you can't do that! it's placarded not to do spins with flaps!" He was pretending to be a student who gets in to a spin turning base to final. I immediately said, "I got it" and simultaneously raised the flaps, pulled off the power and recovered from the spin. I then started "teaching" him what just happened.

He must have thought I did the right thing because I passed. My point is, be ready for the unexpected.