Two Singularities

 One thing to note, because I've kind of skimmed over something here: When using rotation to evaluate black holes, the event horizon is not, in fact, the point at which the relative angle of time and space are at ninety angles, compared to a sufficiently distant point.  The event horizon is a different angle entirely, which I think it may be simplest to call a forty five degree angle; the point at which motion through time and space are, in a specific sense, equivalent.

The ninety degree angle happens inside the event horizon of a black hole; it is the negative mass binding singularity, which is to say, it is the radius at which, if all mass is to be found inside that radius, the mass of the black hole is canceled out by the negative mass binding of the gravitational energy, to use the conventional-physics explanation.  If I recall correctly, it's something like two thirds of the radius of the conventional event horizon, but don't take my word for that, as I'm going on some hazy memories of the ratio involved.

There's some curious geometry involved which generally prevents all the mass from falling into this second singularity in conventional physics.  It can be mostly understood as "There is no longer a spacial extent at this point" - which is to say, the geometry is effectively one-dimensional; anything falling past that point exists purely in time.

However, time is distance, as well - and a closed dimension, or a complex spiral.  So an object inside the event horizon, which falls past this second singularity, is in a sense folded back on top of the universe; the mass exists in time, and thus distance, and thus exists at every distance from the black hole.

This is, I think, where gravity "comes from", and is in a sense the stable configuration of matter; while I have described this in terms of gravity, I think the original form of matter, in this sense, is a wave in space-time, which bent itself inside out.