If a spin does not fully develop, a spiral dive may result instead.
The recovery is:
Doing both at the same time can overstress the glider.
Comparison of spin and spiral dive:
| SYMPTOM | SPIN | SPIRAL DIVE |
| Attitude | Nose well down, may be almost vertical. | Nose down |
| Speed | Increases rapidly but airspeed indicator may show a low fluctuating reading. | Increases rapidly, should be shown on airspeed indicator. |
| Rotation | Usually rapid. | Usually slow. |
| Rate of descent | Very fast. | Not so fast unless a very steep dive. |
| Control forces. | Ailerons and elevator weak and unresponsive. Rudder harder to move - may be hard over in the direction of the spin. | Good response. Stick forces high if pulled back. (positive 'G' force). |