I met Peter at E3 one year before the release of Black and White two. He offered to give us (then two kids) a pre build copy of the game before it even came out. His secretary ripped it out of our hands on the way out the door and gave us some lame swag instead.
Guy has always had his head in the clouds. Love his games though.
This was a controlled depressurization (they used a release valve and let the pressure creep in). This shows what the pressure can do over time. Now image that be happening instant because the structure holding back the pressure failed all at once.
Mythbusters - Diving Suit Decompression (NSFW - gore)
Now imagine this, but deeper down, where the water pressure is even higher
Edit: Mythbusters - Tanker Implosion (SFW)
That's exactly what was happening.