Did you get a good accel bias calibration? This only needs to be done once, but you want to make sure it is as level as possible during that step. My guess is that you are getting some noise introduced during the gyro zero timeout. Gyros are zeroed during the first 10 seconds after power is...
This makes me think you have a bad BEC. What does your ESC->CC wiring look like?
You should have 5V, Gnd, Signal from only one ESC connected to the outputs of the CC board. Every other ESC should only have signal. Can you check the voltage between the 5V and Gnd coming from the ESC?
We have been talking about having the GCS automatically connect whenever an OpenPilot board is attached via USB. We don't want to fall into the MS Office trap, where it tries to be so helpful that it makes getting anything done difficult. But I think this may be a good change, and can't...
Wow. Amazing. I kept thinking while watching those videos how many times I would have crashed attempting something remotely similar.
Excellent flying and good to see the CopterControl put through its paces.