"Drs. Wood and Reynolds complete their thesis in public view. They note that the Kingdome demolition created a 2.3 richter earthquake, and point out that WTC had many times the PE, and should have caused a much larger earthquake than the 2.3, and 2.1 quakes that were actually measured."
This actually makes sense, and goes against the controlled demolition theory. In controlled demolition, the bottom support would have been taken out, and the entire building would have dropped, hitting the ground with it's full weight in a very short amount of time (I'm just guessing here, but I'd say roughly the time for the building to drop one story). This would have created a much larger impact to register. As was mentioned earlier, the Ricter scale is a measure of peak vibration. The measurements you've presented here would appear to be reasonably consistent with the buildings collapsing from the top down, where the destruction was spread over a relatively long period of time, with no real "impacts" other than when the top floors first collapsed.
An analogy: Drop 20 gallons of water on your head and you'll be knocked flat on your back, pour 20 gallons of water on your head over ~5 seconds, you're just going to get wet.
If I get the time, I'll work out the physics of it and post it so you can work it out for yourself. After all, you shouldn't just take my word for it!
Long live the DNRC!