Well, if there is no loading on the wings, no matter what your attitude, you CANNOT have AUTOROTATION. It would be something using ailerons, a big no-no in a properly executed snap.

The plane won't know that it is going straight up once you load the wings, then autorotation can be initiated and a SNAP can be performed. Don't be fooled by judges that don't grade properly, a common problem with IMAC, according to Brian Howard (IAC instructor, IAC Judge, TAS judge, former TOC judge) who taught the Salinas Advanced Judging School.

Good luck fighting the good fight and not let poor judging make us fly poorly.