How funny. I love how he tried both flattery and a excessively formal writing style. Gotta give him credit for trying. lol
I think you handled the situation very well. I get frustrated in some of my classes when I work very hard to meet deadlines and make sure everything is done properly and then the "slacker" student makes up some excuse and gets an extension.
Anyway, I agree with Mandy. I think you would be one of those "unforgettable" teachers!