the locked TOGA thrust ("TOGA LK" FMA display after Alpha floor condition is resolved), unlike other thrust-lock situations, cannot be cancelled be simply moving the thrust levers: autothrust has to be disconnected explicitly. (I could not find whether instinctive disconnect and/or moving levers to idle will suffice -the latter might be impossible, since Alpha-floor protection will activate even with levers in idle-, or if disarming it with the A/THR pushbutton is required.)
The
only way of exiting TOGA LK is by pressing the A/THR switchlight. It has to be a determined and conscious way.