As he was facing not one but 2 rank 4 mages, Lansorek did not want to take any risks. He was also aware of Lopas' identity as the daughter of a high ranking noble family. So he was well aware that the punishment he would receive for misleading them would definitely be harsh.
For that reason, the best solution that came to Lansorek's mind was to run away. If he stayed hidden for a year or two then he was sure that this incident would die down. So after thinking about everything thoroughly, Lansorek found that running away would definitely be the best choice for him.
Immediately after making his decision, he left his house in a hurry using a secret passage. He had made this secret passage while keeping a situation like this in mind. This passage directly took him out of the city.