Hi Antony,
Intriguing essay. (And thanks for kindly commenting on my site.)
There are a couple of things I don't understand. Bekenstein and Mayo demonstrated that the black hole is a 1-dimensional information channel, not 2.* The surface -- the event horizon -- is 2-dimensional, because to the observer at a sufficient distance from the horizon, all information on the horizon appears flat. That is, by the rules of relativity, a hypothetical "spaceman" falling into a black hole would to the outside observer appear as a flat picture growing dimmer and dimmer over a long period of time.
You seem to be saying that the black hole exchanges information with the observer; however, the physical interaction is 1-way, i.e., gravity at the event horizon returns information as a continuous wave to the outside observer, while the hapless spaceman is broken into discontinuous bits. Whether he can be reassembled into his healthy coherent self is the black hole information paradox. If a black hole is 1-dimensional, and no information is lost, then all those bits are ordered in a specific way when they radiate away from the horizon; they come out in the reverse direction they entered in. This accounts both for classical time reversibility and quantum-mechanical least action -- and it's why I like Christian Corda's model so much. Professor Corda accounts for pure states of quantum evolution, such that the wave image of the observer at a distance matches the quantum state of the object on the other side of the horizon, all spacetime-symmetric.
Another thing beyond my understanding is how to have a negatively-valued vertex. I grasp that you are avoiding the disappearance of information by avoiding the naked singularity; however, negative spacetime would seem to result in a white hole, not a back-reaction. What I mean, is that if the positive dimensionality is continuous, and if one must deal with a naked singlularity at all, what's on the other side of it must either be continuous as well, or one had better supply a precise limit, and a good physical reason for it.
Don't take this as negative criticism -- you get a good score from me for an innovative and stimulating approach.
All best in the competition!
Tom
*[1] Bekenstein, J. & Mayo, A. "Black Holes are One-Dimensional." General Relativity and Gravitation 33;12, December (2001). (Second-prize winning essay, Gravity Research Foundation, 2001.)