The episode opens with the pack in a desperate defensive position. The Nogitsune, inhabiting Stiles’ body, is feeding on the chaos and pain he has sown throughout Beacon Hills. To save Stiles, Scott and Lydia realize they cannot simply fight the physical host; they must venture into his subconscious.
Scott realizes that he cannot win through force. By "roaring" as an Alpha within the mindscape, he signals to Stiles that he is not alone, reminding him of his humanity and his pack. [S3E22] De-Void
The "divine move" isn't a solo play; it’s the realization that Scott’s strength comes from his connection to others. The episode opens with the pack in a