It has been said that physics still occur inside a black hole, excluding the singularity. It's just that we can't observe the physics. The spin of black hole is measurable. What I want to know is; does the INCREASE in spin as the object gets ever smaller stop increasing at the moment in becomes a black hole? Certainly the spin doesn't increase to infinity. If the observed spin did continue to increase for a bit before coming to a stop would this would imply a hard radius below the event horizon? Has this been specifically excluded? If anyone has a link to the subject of spin as an object transitions to becoming a black hole I'd appreciated it.