You shouldn't discount this spinning thing too quickly. From the point of view of people who didn't design the device, the auto focus bug being related to time didn't make sense either.
With that said, some GPS units make use of data other than from satellites to calculate it's position and velocity. Some GPS units are known to use internal sensors to help adjust their calculations. An example of this is the use of an inertial navigation system which uses rotation and motion sensors to aid in GPS tracking. So if the Droid does use its internal sensors for GPS error compensation, then having the sensors provide incorrect measurements would affect the GPS's accuracy.