Not that hard to disassemble and clean up, just a pain.

Have had to do this myself mainly due to leaving the parking brake on for an extended period of time while the truck sat (I mean months, not hours or days).

Go in there and tear it apart. Clean everything out and use a little white lithium grease (use sparingly, don't want gobs of it that will eventually get onto the pads) on things as you reassemble it. In my case, I really did not need any new parts. More just that crud had gotten in there and frozen things up.