The issue is not the immorality of the Trust comprised of the King's assets ending up under the exclusive control of American businessmen.  The issue is one of procedural constitutional matter.  Whether the fruits of investigation under the direction of a lawyer, which fruits are disclosed and given to the opposition, are protected by attorney client privilege.  The judge likely found that this "fruit" fell too far from the tree to be protected by privilege.  Simple.  The Trust had better consider its options, and perhaps, find better lawyers.