Hi,
I looked at your crash... It seemed like you used ailerons too much> you were trying to use ailerons to make corrections instead of rudder. Really nice video anyways
another mistake was that you pulled over in a hover. If you are hovering (and you aren't sure in those pull offs) than you should try it up high. I've made many mistakes like that. Low level hovers cost a lot. I pancaked my old 3d foamy while I was trying a low level torque roll. I found the motor to give excellent power to you Ultimate Bipe, nice setup.
Paul