No expert on spinning other than normal flying instructor stuff in 152, 172, PA28140 and Tomahawk over 40 years..
But my last Tomahawk spin was exciting, normal entry couple of spins and standard recovery technique..
Then the nose pitched down into a very high rotational mode i had never seen before. But the manual printed that this could occur.
So i waited and waited, getting lower and lower. So at what point do you think this is not coming out.
I had read the Slingsby accident report and conclusions and that came back to me, so i went pro spin, pulled hard back and then recovery mode but more forceful.
And it snapped out of the spin.
I never spun the Tomahawk again, that was some years ago.
I have seen the NASA spin video, but they all seem quite gentle.