I venture to say that I would have shut down Engine No.1 on short final, rather than touch down with the power stuck at 70% and travelling at 230kts. . . .
I think you might have come unstuck glueball if you misjudged when to cut the engine and smacked into the sea wall short......or managed to get it on the runway then did not have reverse and over ran into the water at the far end!!. It was a rotten windy wind shear day when the incident occurred and only that crew knew the best action to take in the emergency.