Parking brake issue - 2012 RS

[Pappy John]

When I de-actuate the parking brake pedal, the pedal comes up fast, but the brake pulley releases really slowly. This puts slack in the cable, allowing it to pop off the pulley.

I removed the pulley and found that the caliper actuator (little stub shaft with the splines) that used to move fairly freely now has very sticky rotation. It's little rubber boot was half way off allowing dirt to get into the mechanism.

I want to clean and lube it, but I don't know if there is more to removing it than just unscrewing it from the brake assembly. Will small parts with springs come floinging out of that hole if I remove it?

Also, does something like that require some special exotic hi-temp grease to work in such close proximity to the brakes?

Nothing about this part is covered in my copy of the service manual.