2004 F150 e-brake is sticking, heating-up the rear passenger hub and causing a violent vibration (like losing 1/2 of the wheel weights). I was finally able to "break" it loose by locking the e-brake while in motion on a grass surface.

I checked archives and TSB but couldn't find any info.

The brake cable seems to operate freely, as I observed the motion of the e-brake lever coming out of the hub.

Has anybody else had this issue, and what did you do?