Derivative part of PID-control effectively dampens them out. Autotrimming through the whole flight envelope. Maintains attitude, if flight controls released to their neutral position. Autorotation during take-off only if trimmed for it. At high AoAs aircraft first loses its latheral control authority and then the longitudinal control.
Aircraft is stable, ie.
Without flaps, at 6 and 10 degrees of AoA the gliding ratio is 9.1 and 6.2, respectively. Without CAS, plane is hard to fly because there is not much yaw-related stability. Roll can cause enormous sideslip and plane is prone to enter spins. However, flying or even landing is not impossible. Some more details about the model 6 DOF, quite high-fidelity flight model.