I was a bit surprised (http://olkhov.narod.ru/conf98.htm) to read that there *is* a tectonic “explanation” for it, iow, someone has claimed that an earthquake caused the trees to fall down for miles in all direction, just in a nice round-ish crater-like arrangement, and did nothing else for many more miles in any direction. I would also wonder how the visual sighting of the incoming object (reported in contemporary newspapers in India) could be explained by tectonics. ;’)
In this case the high initial potentiality could be explained not only by mechanical or electromagnetic processes, but also by a shift that occurred in the informational sphere of the planet. This shift could result both from natural and man- generated processes, caused by upsetting the informational and energy balance. Thus, the Tunguska Event could be identified with a global manifestation of the poltergeist phenomenon in the terrestrial space...
DON'T TELL ALGORE!
According to a book which includes the Tungusku incident, people in London could read a newspaper at night from the glow. Also there was a similar event in the Amazon forest in the mid 20th century that had a 50 mile diameter blowdown area. Wish I could find the book I read these things in, will continue to look.