Now that's just crazy talk. To travel that way around the Earth, what you do is jump and let the Earth rotate underneath you. Obviously, you can't get the ship to jump out of the water, so you're forced to go the other way around.
I have questions. So many questions. Lets start with the obvious: What the fuck is that theory? Is that person suggesting there were no black slaves? That slavery existed but not with Africans? That 200 years of slavery was faked somehow? How do they square the pilgrims and Columbus and the rest making it over?