343 Studios obviously believes in showing both sides of every story...
Released just after the Spartan Locke trailer, a second trailer titled "Master Chief" was released and appears to show the Master Chief's point of view before/during the Spartan Locke ad.
343 also took the subtle opportunity and revealed at the end of the video that Halo 5 Guardians releases October 27th, 2015. The #HUNTtheTRUTH campaign has been a wild ride so far, and its only getting started! Who knows what else 343 has up its sleeve! We'll find out together next week!
This...Is this what you wanted? Is this what you were looking for? Was everything you've compromised, everything you've done worth it? Was it? You've completed your mission, Spartan Locke...Mine is just beginning.