Read section 8.9.5 on page 32 of the afore mentioned Flying and Judging Guide. Paraphrased it states that neither the attitude nor speed of the autorotation are criteria for deductions.

Based on your description a judge should not downgrade you. However, there may be other criteria that those few clicks interfere with (stall break, stopping and restarting autorotation, ect.) Because you cannot better your score by flattening your spin I would suggest that there is no reason to add something else to think about while flying your sequence.

Thanks,
Mark Jorgenson
IMAC Judge
Don Lowe Masters Judge
TOC Judge
XFC Judge
WAFC Judge
JR Challenge Judge
Will Judge for food