No one was safe for the triple full moons, not even those who built the wall around the castle to stay there, and especially those because even when they didn't have to think about the monster, the mage's eyes who left them on the first days were on them.
Heigl untied Yogev and they headed toward the forest to hide, while Lexie and Ciel just closed the gate on the institution, not letting anyone get there.
The majority of mages who disobeyed Yogev and wanted to leave were also in the forest hiding all the time, training and creating weapons to attack him and his people on this night to take over the place they created.
The situation was not like Heigl predicted to Yogev when he asked him to release them.