Enter: last night's San Francisco Halo 3 beta event. The Bungie team, responsible for the development of all things Halo, were interviewed by numerous gaming outlets and media sources, including one Rumor Reporter. When asked about the ill-fated Halo DS, Bungie's Brian Gerrard, Director of Franchise and Community Affairs, commented, "Wow, I have never heard or seen such a project, nor do we have plans for any DS Halo title."
We doubt either of these two respected news sources were lying or mistaken, which leaves the question: who made the mysterious Halo DS, the one Matt C. played? There's only one obvious answer, of course.
Shiggy made it.