When working with animations, there is a way to edit the spin animation value after it is applied (I always thought I had to delete and recreate). Go to the SmartMotions editor and find the path for the spin. Right-click on it and edit the properties. Click on the "Path" tab. Select the up arrow on the Current Key setting to get to #2. Select Key Setup. In the drop-down, select to "Pan". The value of the spin is listed here.
Yes this is a few clicks, but if you have a complicated path that is already setup for a time sequence, this is easier to edit than to recreate in some cases.