I've flown the A,D, M and N models of 172. All were certified for spinning when the aircraft was operated in the utility category. (As a reminder, that's +4.4G, -1.7)
I've spun one of them a few times, as part of a BFR. (Dual.)
Not what I'd call a great spin trainer, simply because it needs coaxing into the spin (at the stall insert full rudder, and the gentle old girl goes "oh, really?...well, ok... if I must,) and it needs full aft to hold it into the spin, unless a bit of power is maintained.
I can imagine botched recoveries in some aircraft. The 172 isn't one of them. You'd have to be rather ham-fisted. I mean, to the degree that's it's an insult to all ham.
Pretty much the moment the aft pressure is started to be relaxed, the aircraft is very obviously flying again normally. A gentle pull out from the dive can generally be achieved without exceeding about 2G. Probably less.