Overun, yes.
The spin entry was NORMAL (i.e., pitch very steep nose down).
But then, with no other control input by either pilot, the plane pitched UP in the spin, high enough I could see the horizon, but still slightly nose low.
At that time, the rate of rotation *seemed* to increase.
AGAIN, this happened over 17 years ago, but it burned such a memory in mind that I have no interest in repeating it.