Answer:
You still feel as though you are still spinning because your semicircular canals haven't returned to their neutral state.
Explanation:
The semicircular canals are located inside the inner ear and they are 3 tubes filled with a liquid or fluid known as endolymph. These are in charge of keeping an individual's balance.
When the individual's head moves, the liquid moves hairs within the tubes, which turn the movement into signals. These are sent to the brain and it decides the individual's balance.
When you spin, the liquid begins to spin and you tend to still feel dizzy afterwards because these canals have not returned to their neutral state and the movement is being sent as signals to the brain.