LOL Obviously. No one is claiming ancient scuba divers did it.
He also said, "If you find anything other than what I've already been shown, I'll be on the first plane back." (...or something close to that) I wasn't impressed with anything I saw until I saw the large carved human faces on those huge structures. Those got my attention. (I immediately thought of Mt Rushmore)
It's unfortunate that Schott made his statements right before the faces were photographed. He wouldn't say the same thing now, that's for sure.
I noticed that too.
I'll give more thought to crustal plate (rapid) movement theory. I'm still a skeptic though.