Another question he asked me is when in an erect spin, applying full rudder in the direction of rotation will cause what to happen? I said I was unsure, but answered that a flat spin would occur.
He said it was either a flat spin, or an inverted spin. My textbook doesn't go into that kind of detail. It just mentions how to correctly recover from the erect spin, explains what a flat spin is, and says that an inverted spin has roll and yaw in opposite directions. Leading me to believe that my answer was correct.