I thought the same thing at around 1:17 in the video; if they stopped the pitch axis movement 90 degrees earlier (so that the poles were aligned), it wouldn't b

I thought the same thing at around 1:17 in the video; if they stopped the pitch axis movement 90 degrees earlier (so that the poles were aligned), it wouldn't be able to do the roll axis movement because it'd be in a gimbal lock position, right? At https://www.youtube.com/watch?v=AHUv9Zda_48#t=5m20s https://www.youtube.com/watch?v=AHUv9Zda_48#t=5m20s they show its behavior around the poles, but the motion it's doing right then is pitch, not roll.