Very true. Novices almost always overcontrol aircraft, even R/C aircraft. Smooth steady movements are key to maintaining control. Once you loose control it's over. Being an experienced fixed wing pilot only helps a little. Having gyro assist helps a lot (not likely in that thing). Rotary wing is also much harder because of ground effect and the number of axis you have to deal with. It's also less forgiving as can be seen. I doubt this was caused by equipment failure.