John-117 Vs Shadow-Of-Sunder-Star

After the E3 2015 Gameplay Reveal, it states that the Master Chief is attempting to (Edward Buck), or already is (Warden Eternal), boarding the blue Guardian, which is, assaulting Sanghelios… however perhaps John motives aren’t considered sinister.

We know that John, shares a unknown connection with the Didact, however, now that the Didact is composed, he possibly lost his consciousness and control over his constructs… thus allowing perhaps John-117 to control an assortment of Prometheans and Guardians?