All we hear from that crossfit dude is the standard cult-like assertions of absolutes: You must do paleo, crossfit is the best way, blah blah. It looks like Rich Froning doesn't even eat paleo:
Sweets Are OK
“I love apple pie. If I see one, I’m going to eat the whole thing.”
Screw Diets
“A lot of people who do CrossFit eat a strict paleo diet, but I don’t subscribe to any specific way of eating. If you burn enough calories, you don’t need to.”