Seized parking brake – Help

Set parking brake on my 71 Cuda for the first time ever and it had good pedal pressure and released back but brake is still engaged because the car wont move. When holding the release lever there is play in the parking brake pedal.... Is there any tricks to release without removing the hub before I dig in? Any other info or tips once there would be helpful to fix the problem.
Thank you!
Author: augustacuda