It is incredible the amount of imagination caused in people minds by this vertical stabilizer wreckage recovered. One wonder if they are realizing that if the hydraulic system was cripled for whatever reason, and it will be in any case of structural damage implying the rudder, the maintenance computer won't simply address a four minute string of unreliable speed related problems...
On the other hand, when two different materials are assembled together, each one with singularly different resistance and deformation behavior, it is not very hard to understand that a separation will very likely result once a critical level of acceleration is applied.