As Lyle was walking toward the city that he managed to see by using Olman's ability, back in Orsvald, things were in full swing. Harrison was sitting with both his father and his mother and was slightly panicking.
Back when he learned his mother's true identity and decided to join her, betraying Lyle and working against him and Nicholas, he never expected such things to occur.
Not only was the council unable to deal with Nicholas, but they even lost their lives, as did the other two Shadows. The loss of the council and the two Shadows was a big blow by itself, but after that, the headquarters of the organization was destroyed by Nicholas, killing thousands the explosion didn't only destroy the headquarters and killed hundreds of agents and assassins that were present, but thousands of civilians that lived above it.