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It actually does, which is the interesting part. Think about it. If something at a central point started expanding faster than the speed of light, you would be receiving the light from the object at that central point(The unexploded shell), and the edge of the expansion(in this case the edge of the fragments) at *the same time*. You would literally be seeing the past at the same time as the present*.
*The present being the moment at which light reaches your point of observation, which I guess means that you would be able to see the same object, at two different points in time, in your subjective present.
Thank god this scenario is impossible, it gets confusing fast.