A similar webpage
This guy has remarkably similar ideas. He hypothesizes a spherical shell, or "neutral zone", surrounding a black hole, effectively representing the event horizon, where all infalling matter has been trapped, having lost all its gravitational potential energy. He used energy methods, and I used time dilation from special relativity. We both have the same idea: black holes are hollow.
http://www.geocities.com/recycling_universe/new.htm