Well, it may be a retailer demo, or an HD DVD demo. There was a rolling HD DVD store demo display - a representative would set up an HD-DVD display in the store and man it for a couple of weeks. Given the date on the disc, it could be one of the discs they used during those rolling displays. The travelling rep would likely get some discs, display them, get more discs, to return the old ones (less to carry, and less junk) and those would head back.
Retailers would probably be forced to return them as well to avoid getting charged - this was back in the day when hdmi cables and such were novelties and you can be sure they got charged for stuff like that. And retailers would send it back with the rest of the demo gear because it's something that won't play on their regular DVD players anyways.