OK. Here’s my GUESS.
The boeing was at very low speed when it went over the edge. Had it still had high speed, it would not have ended resting on the steep slope towards the sea, but IN the sea! The skid mark that can still be seen on the runway (picture below) already has a large angle from the runway centerline.
So here's what I THINK COULD have happened: The a/c was rolling at taxi speed toward the turn pad at the end of the runway, when suddenly there was a technical malfunction (NWS, left brake suddenly fully blocked…) causing the a/c to veer to the left. And just before it stopped it rolled over the edge.
I can’t wait for the official report to be released (hoping we ever get to see one
)
