I would be utterly astonished if any commercial aircraft simulator had an accurate representation of the aerodynamic forces and moments in an actual spin, given the almost total absence of any data whatsoever on which to based the modelling. It's a flight regime where little or nothing can be extrapolated to from normal linear aerodynamics, and to actually build a realistic spinning aerodynamic mathematical model is not a trivial task by any stretch of the imagination. (When I was at BAe we had post-stall/spin models for the Hawk, but I don't think any of us would have considered them other than a general representation of the aircraft's behaviour, and that was WITH the benefit of large amounts of flight and wind tunnel data to base the models on)