What do you think would happen... if you went to the same blanks that tried to force you out, show them that picture, and tell them that you had found this piece and have already given it to King and it was only a matter of time before you find the rest since the earthquake disturbed so much?
If there are pieces to the mural and they believe the location of the mural to be secret and safe, wouldn't they keep the pieces there as well?
This is, of course, assuming the mural isn't within the walls of their dorms.