Look at the photo at the top of the post. If the missile truly was a C-802, it's not hard to see why the ship was hit. They're so close to the beach they have about 2 seconds reaction time.
That is an even worse excuse for the Israeli Navy. Why were they were soo close that the Barak and the CIWS didnt even have sufficient response time? This is a warning for us too.
We'll just have to wait for more info and over time it will come out. Either way...the Israelis put that vessel there. It was designed to protect against this type of attack. It was in combat and should have been all fired up and ready. If the command failed, and they discounted the threat environment, then someone will be relieved, and the next guy will be more than ready.
Just my thoughts on the matter.