If you create the scenerio where one wing stalls before the other while nose down, that is what causes the spin.
If you briefly throttle back the engine that's on the outside of the spin while leaving the other at full power, that will counter the spin the quickest. (defult keys to select an engine to adjust individuallly are: Shift_1 for engine 1, Shift_2 for engine 2, Shift_E for both). If you spun because 1 engine is dead, kill the good engine and use normal spin recovery techniques to recover, then refire the good engine.
Normal spin recovery proceedures may work depending on the severity of the spin. Close throttles, push forward on the stick, no flaps, counter rudder the spin.