The sensor is a tight fit in the hole, plus there is an o-ring and the sensor seems to be magnitized. If you cannot get it to work out by gentle twisting and cautious tugging (on the sensor, not the lead) then you may have to pull the rotor to push it out.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.