At what point is a quark decorkified? Well, I think that there's a lot going on here and part of the answer is going to be there aren't any singularities in nature. The real answer is questions like this involve quantum gravity if you want to discuss what happens in the real world. And we don't understand quantum gravity yet enough to give you the correct description of what happens at that point near the point in a black hole where you would have had a classical general relativity had been correct.