The only "trim stall" that I'm familiar with is stabiliser trim motor stall when airspeed is so high that the trim motor is unable to counter the aerodynamic loads associated with an out of trim condition.
Yes, correct---but I'm simply referring to small SE FAR part 23 aircraft under 6000 LBS GW---You set in a lot/full [check AFM/POH!!] or aft trim while maintaining Vapp/slow flight and attempt a 'go around'-see what occurs
See Airplane Flying Handbook FAA 8083-3A--for greater detail for conducting the exercise with
{Stoodants}