Talk:To Where and Back Again - Part 1/@comment-25003213-20161006154614/@comment-24908786-20161008154427

Sunburst is the only one, other than Thorax, who knows about the kidnapping of Cadance, Shining Armor, and Flurry Heart being revenge against them by Chrysalis. Knowing that the Changelings would probably go after the Mane Six and Royal Sisters as well, he sent Thorax to find help, while he probably maintains order in the Crystal Empire, and avoids drawing any suspicion from the drones impersonating the Princess of Love, Captain of the Royal Guard, and their daughter.

As long as he's still there, the Crystal Ponies can still maintain hope that their leaders and future leader will be rescued and returned safely home.