If stubborn sprockets mean that the DJD driver cannot be adequately held to unthread the sprocket... 
then, this Workshop tool may be required.
CNC Made from steel.
Use as follows;
Insert the tool securely into a bench vice.
Remove the driver body from the hub assembly.
Remove the 3 Pawls and spring.
Insert the Pawl area of the driver body into the Bench tool.
Use required chainwhip to remove the now securely held DJD driver body.