I'd find the fighting advice more interesting if the vampires had some sort of issues, like their attention is drawn more easily to movement directly in the front than the sides. Thus, running in sideways would be more advantageous. But no, he pretty much is like "Be unexpected, good luck!"

According to Meyer, he just laughs it off. The poor guy must just have come to terms with his crazy wife and decided hey, she's bringing in a ton of money now.