No way anything but a weapon did that

So, South Korea just raised the stern section of the corvette that sunk under mysterious circumstances about three weeks ago. Looking at the raw video and photos that are now available on the web, it's clear that this ship broke in two. There are few things that can cause a ship's back to be broken enough like that - and two of them are torpedoes and mines. I highly doubt that anything internal to the ship could cause this kind of damage.

I'm going to go out on a limb here and speculate...that this was likely the result of the ship hitting a mine or being struck by a torpedo (in which case, we have a deliberate attack). Either way, it is bad all-around.

Do you think this was deliberate?