Ignition Override
For your info it is quite possible to disconnect the auto thrust on the A320 and fly the aircraft like a 737. In fact on the 737 it is highly advisable to disconnect the auto thrust on the approach to avoid porpoising. The A320 has a much better system with the 1g profile of the Normal Law not allowing porpoising and hence it is recommended to leave the auto thrust on.
However if the auto thrust is on and you want a lot more thrust, because of a rapid sink, you just push the levers forward out of the climb gate and the thrust will go up to the thrust for the thrust lever angle. But, by all means, if you are not happy with flying the approach with the A/T take it out. I have flown with many Boeing trained pilots who have preferred doing that when they first get on to the Airbus.
But don't knock it until you know about it.