I would not think US customs would be breaking out the plasti-cuffs, at the thought of a Canadian aircraft, departing Cuba, and needing to make an emergency landing at a Florida airport because it's rudder fell off. That is complete dung as far as I am concerned. I am not an expert in US policy towards Cuba, but I think an aircraft in distress is an aircraft in distress. And I think in those circumstances, the US would be more than willing to render assistance.
Back on topic, with those pictures, It would appear that the rudder has actually shredded away from the hinges. And, I am surprised to see that it is made of composite, honeycombed material. Would this essential flight control surface not be made of a metalic material? I would have thought the elevators, ailerons and rudder would have all been produced out of aircraft aluminum?