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It is shown, in a simple analytic example, that an infinitesimal amount of rotation can halt the general relativistic gravitational collapse of a pressure-free cylindrical body. The example is a thin cylindrical shell (a shell with translational symmetry and rotation symmetry), made of counterrotating dust particles. Half of the particles rotate about the symmetry axis in one direction with (conserved) angular momentum per unit rest mass α, and the other half rotate in the opposite direction with the same α. It is shown, using C-energy arguments, that the shell can never collapse to a circumference smaller than C=8παΛ, where Λ is the shell's nonconserved mass per unit proper length. Equivalently, if R≡||∂/∂φ∥∂/∂z|| is the product of the lengths of the rotational and translational Killing vectors at the shell's location and λ is the shell's conserved rest mass per unit Killing length z, then the shell can never collapse smaller than R=4αλ. It is also shown that after its centrifugally induced bounce, the shell will oscillate radially and will radiate gravitational waves as it oscillates, the waves will carry away C energy, and this loss of C energy will force the shell to settle down to a static, equilibrium radius.
You must be very careful not to make assumptions about what goes on beyond the Schwarzchild radius of a Black Hole because at that point the rate of time has reduced to zero; what sort of meaningful physics can you do in a region that has no time dimension? If you then consider the relationship between space and time you'll then realise that you can't speak with any authority about the size of anything beyond the Schwarzchild radius either, regardless of whether the Black Hole appears to be rotating or not.Just about all you can be sure about is that whatever is beyond the Event Horizon of a Black Hole is not in the form of a simple mass, of a particular size, as we currently understand those concepts.
According to this article, there could be more naked singularities than we previously thought:http://www.sciam.com/article.cfm?id=naked-singularities
ScienceDaily (Mar. 27, 2008) — The date of March 19, 2008 marked the brightest ever cosmic explosion observed from the Earth. The outburst known as GRB 080319B was probably the death of a massive star leading to the creation of a black hole. For the first time the birth of a black hole has been filmed. Cameras of the "Pi of the Sky" project recorded this remarkable event with a 4-minute sequence of 10-second-long images. In almost 20 seconds the object became so bright that it could be visible with the naked eye. Then it began fading and in 4 minutes it became 100 times fainter. At that time the observation was taken over by larger telescopes.