This is really not all that surprising really, the republican part is trying to stay as far away from bush as they possibly can because even other republicans see him for the screw up that he is. It was probably one of the reasons why no one from his administration was invited to the republican national convention.
Further, as the Cayman islands are not under the umbrella of the US media laws, they can blackout and ban anything they want. if they are making a fortune helping insanely rich Americans avoid taxes it makes sense to keep them as happy as possible. If that means gagging their own and international media then they will do it.