Hi TGZ,
The whole problem with the project was this slow speed capability, ie none. Which is why it was so crutial to re-engage the rotors quickly.
As mentioned before, this was its downfall. When it slowed down too much the yaw forced a spin which in most cases, without sufficient height was uncontrollable. In the vid here, you can see he nearly lost it, but managed to boost the thrusters (@25 secs) during the recovery and was able to gain height and fly away from what was without doubt impending disaster.