PJ2
One of the pilot's was on his way to the LHS, an therefore, that was a treinee flight. He was a experienced Captain and was on a horizontal move (upgrade) to the A320.
I was thinking of this post, suggesting that the trainee might be new to the A320.
One of the insidious things about the non-moving thrust levers and managed speed is that the engine instrument scan becomes degraded. It can take a couple of seconds to realise what has happened (longer if you don't know what has happened
if new on type) and to react by disconnecting the Autothrust system. In the meantime, the aircraft has accelerated possibly 25 kts, agreed possibly only 10 kts if experienced on type. So, without wishing to say this DID happen, it is easy to envisage that an approach could be unhelpfully destabilised in such a way resulting in excess speed at threshold.
Yes, of course a GA could/should be the order of the in such circumstances, but sometimes the training value by quick intervention doesn't happen.
Again, not saying that this is what happened here.