Moments earlier, Kyran was still fixated on taking hostage the others inside the castle.
It was what Rex wanted, and that is what he was going to do.
Angered by Kyran's strong conviction to follow Rex's command to the core, despite his inner doubts about Rex's safety, the others made an all-out confrontation. All took the matters of Kyran's conviction into their own hands and decided to knock some sense into him.
Despite knowing how Kyran must've felt, this time is really different.
Rex's command needed to be broken, the pack must fight and even die together as one.
But the others failed to defeat Kyran even with their combined might.
Adhara and Flunra were greatly weakened from the injuries they suffered at the ice and snow temple, while Evelyn was the only one who was still at full strength. Due to that, retaliating to defeat Kyran was very difficult if not close to impossible.