Can anyone tell me how to remove the CHT sensor on a 2002 1.6 Focus ?

I pulled the grommet out from between 2 & 3 plugs but can't tell wether the leads pull off from the sensor ( is it a plug on top or is it part of the sensor body )?. Does the camshaft cover need to be removed as a socket will not go over the plastic socket on the replacement I have just bought.

any help appreciated

wwwdot