I have done Spin training in older and newer 172s.. At first, I was not comfortable to do so, but some experienced pilots showed me how to spin the 152.
So 1 day, I did some spins with a student that wanted to get the feeling of them. This was a 1980 152, tanks half full, I was 180lbs, student about 160.
First couple of spins went well. We climbed up to 5700 feet to do them, over the Gulf of Mexico.
On the last spin we did, the plane got out of control. I entered the spin with a full stall, partial power, and then full rudder deflection. The C152 tumbled over, but then suddenly gained airspeed real quickly. We went OVER the redline to apprx. 200 kts indicated.
At that point, I thought that was it and some parts are about to fly off. Fortunately, we recovered at around 1200 feet, doing a slow pullback, myself being scared of overstressing the airframe.
I never really understood how the aircraft could accelerate to over 200kts in a few seconds.
I searched the internet and found that some 152 had gotten out of control in a similar way, probably being a C.G. problem.
If I ever have such students again, I gladly will send them over to some aerobatic instructor.