Carry on with all of your imprecise or incorrect information
Oh, the irony.
Brint was 100% correct, and you are 100% wrong. It WAS in fact, a fumbled punt. By rule, a returner cannot in any way, shape or form "fumble" a punt while trying to field it. He can only "muff" it. Therefore, what Nguyen did during that return was indeed "fumble a punt". You can only "fumble" a punt once you've got possession; otherwise, it's a muff. (Oh, and to be 100% accurate, a returner can't muff a kickoff. Those are fumbles; but common terminology refers to them as muffs).
But carry on being a complete dick, particularly with all of your imprecise and incorrect information.
Jesus, I wish you'd played the game....