Please explain to this SLF the normal recovery from a flat spin
1 - Idle power;
2 - Hands OFF the stick/yoke;
3 - Full Rudder deflection, opposite to the rotation of the Spin, until rotation stops;
4 - Neutralize Rudder and pull out of the dive.
Now, this is the Muller/Beggs technique. Used on aerobatic (normally single-engined) aircraft.
An airliner is not supposed to be designed to be flown into a spin, nor (as far as I know) is supposed to be certified to fly-in and fly-off a spin. There is, therefore, no "technique" or training required by crews to fly-off spins on any Airbus or Boeing a/c.
Airline Pilots are supposed to prevent their aircraft to enter any stall. They are supposed to be aware at all times and to manage the energy of their aircraft to avoid them to enter any unrecoverable situation. But the issue you are rising is much more complex than that...and an A330 with at least 3 Tons of Fuel on the Trim Tank, with an aft CG is hardly "spin recoverable".