Wow, never heard of EMAS before, but it seems it's been around a while. Not sure if it's used outside the USA?
I wonder if the fact that they went off the edge was due to not wanting to go right off the end, maybe not knowing about the EMAS? It doesn't look very obvious where it starts, just a black line of the on-ramp.
So do airports with it installed carry spare blocks to replace the damaged ones rapidly when this happens?
Is the runway closed until it's repaired, as it's no longer 100% covered?