It sounds as if the pilot had a seizure or something, and instead of braking and reversing the engines he managed to speed up instead. It certainly seems like more than just hydroplaning on the wet runway.
I don’t know if the co-pilot would have time to intervene in such a situation.
I think he may have realized too late that he was in deep stuff and accelerated to try to lift off.
The way I hear it, the pilot was probably trying to take off again... At that airport, if you don’t land early your supposed to try and get off the ground again.
The recorders will tell the full story.
NBC Nightly had a security camera clip of the plane landing. It was hard to estimate the speed but it did seem very fast for a landing.