I said it before, Ansom knows he is booped...his only hope lies in the fact that this might just be a trick of Stanley's of hiding the dwagons with an illusion. His comments after vinnie suggests that it looks like a pretty shrewd trick is his realization that 'it does' look like one...in fact it probably is in his opinion...he still believes that STanley is calling the shots so he goes with the only assumption that makes sense...that Stanley is hiding his troops in the obvious place to keep them safe since he is not smart enough to outmanuver him so completely.

In essence though, Ansom has nothing to lose. Either he is right and he gets the battle he was looking for against the dwagons, or he is wrong and charges into an empty hex, no worse than his last position. Either way, he confirms that he was right about Stanley's tactics, or confirms that Stanley, or someone else has done some mighty fine manuvering and he is in even bigger trouble than he realizes.