Even if he did everything right, If the aircraft did not start hydroplaning untill after the engines were in reverse, then the correct action is to ride it out, even if it means going off the far end of the runway. There are times where you can do everything right, and still bend the airframe.
Everyone walked away from this one, sometimes the correct action is to sacrifice the airframe for the lives of the passengers... Another example of that was the ditching in the Hudson river...
Cheers
Wino