WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The sensor rotor does not need to be removed unless it is being replaced.
Tap the ABS sensor rotor off the bell joint outer race using a chisel.
Fig 1: Taping ABS Sensor Rotor Off Bell Joint Outer Race