OK, figured this one out on my own by poking around in the app.

1. Tap the settings/options cog at the bottom right of the sidebar menu.

_{(Click image to enlarge)}

2. Scroll to the bottom and tap "Delete cache and saved data".

3. Tap the OK button.

4. Wait for the data to clear and login again. Done.

OK, figured this one out on my own by poking around in the app.
After following this procedure you will have to login to the Spotify and update any preferences you had previously set.

_{Click images to enlarge}

1. Turn off "Available Offline" for all playlists you don't want re-downloaded and taking up space on your phone.

2. Tap the settings/options cog at the bottom right of the sidebar menu.

3. Scroll to the bottom and tap "Delete cache and saved data".

4. Tap the OK button.

5. Wait for the data to clear... Done.

OK, figured this one out on my own by poking around in the app.

1. Tap the settings/options cog at the bottom right of the sidebar menu.
   

2. Scroll to the bottom and tap "Delete cache and saved data".
   

3. Tap the OK button.
   

4. Wait for the data to clear, login again... DONE.

OK, figured this one out on my own by poking around in the app.

1. Tap the settings/options cog at the bottom right of the sidebar menu.

_{(Click image to enlarge)}

2. Scroll to the bottom and tap "Delete cache and saved data".

3. Tap the OK button.

4. Wait for the data to clear and login again. Done.