Lots of weird stuff happened. It was pretty hard to understand how we managed to lose so many airplanes in relatively benign conditions. Or, benign compared to Circles 1 and 2 on Wednesday, at least, where we all survived. Two folded wings, an overhead flameout and crash, pancake inverted and subsequent big crash, an intermittent connection on an electric that resulted in lost flight/withdrawal and *one airplane chewed up by another in the pits*.
That latter was a perfect example of why I wrote the arming plug rule. The airplane had been (through a series of "unusual/unplanned" operations) left in the pits while still armed. For some reason, sometime later, it started up and then proceeded to chew up the airplane in front.
OK, it definitely should not have been left armed, that's a problem, but the reason that this is a rule is that due to an unknown action, the armed but halted airplane, which would normally sit there doing nothing, *decided to run*, with very predictable results - "running amok in the pits" as I previously described it. I emphasize again - you cannot count on low-level logic states to stay the way they are without some other means of making sure it stays. That means anything in that timer could happen in any way at any time as long as there is power to it.
Brett