This rule has its own exceptions at the case of very large black holes, where the energy density of surface gradient cannot be neglected anymore. The surface energy density of space-time curvature balances the mass density of black hole itself and it leads to the violation of total reflection condition again. Such giant black holes will change into so called quasar or fuzzball (or "naked singularity" by older models, although such stars needn't may not contain any daughter singularity at all), which is quite radiative. At the case or rotating black holes the total reflection is violated at the poles of quasar first, so that the black holes of the average size are exhibiting polar jets, which can be considered as a exaggerated case of so called gravity brightening, which can be observed at the case of giant, fast rotating stars (like Regulus at the left picture bellow). It means, the polar jets are insintric property of large black holes by AWT, not just the result of collimation of accretion radiation and the shining black hole is losing its mass by such way.
The total reflection mechanism enables us to explain, why black hole cannot reflect the light, the wavelengths of which is higher then the effective diameter of event horizon. The evanescent waves escaping the event horizon can serve as an analogy to quantum tunneling of photons by classical Hawking mechanism. In addition, every "scratching" of event horizon by impact of heavy object will lead to violation of total reflection and the release of giant flashes of gamma radiation from interior of black hole, for example during black hole collisions.
From AWT follows, the internal surface of event horizon will be quite reflective for short waves, which has even its own testable implications (a model of cosmic hall of mirrors). The extreme red shift will complicate the search for reflections and dodecahedral space topology, though. It may still be possible, the faint structures observable in far infrared spectrum are the result of reflections from internal walls of our universe. In this connection the analogy between inner and outer perspective of black holes and the archetypes of hell and heavens may be interesting. Are we descendants of creatures, who passed through event horizon in their recent history? Nonetheless, AWT model of black holes appears quite predicative, although here are always many alternative ways, how to interpret such observations.
For example, at the case, some black holes will get close mutually, so called Einstein-Rosen bridge (a "worm hole") may be formed, which connects the parallel universes less or more partially. This mechanism was proposed recently for explanation of so called CMB cold spot in constellation of Eridanus - although it seems, this spot is formed rather by large cloud of dust, shielding the CMB.