Well we don't really know do we? What is more likely that a grown man that has actually been to this island before believes that it can capsize and tip over or that someone might say something outrageous in order to draw attention to a point he wants to make?
Actually, considering this is a Democrat from Cynthia McKinney's district...it's entirely likely he genuinely believes this.
This guy probably has two brains...one's lost, and the other's out looking for it.
Or, more accurately, this feller is depriving a village somewhere of its idiot.