I had this problem in my 96. The rear brakes were constantly scraping. I took them off to change the pads and I noticed that the driver's side was kind of wedged at an agle. It was way too tight in the bracket that holds the pads. The brakes worked, but they wouldn't release.

I picked up new pads from NAPA and I found that they were also very tight. Never had this happen before, but I took the pads to my grinder and went to work until they slid in the new brake hardware kit. No problems since then, but maybe whoever did your brakes also found they were too tight and just forced them in. That will not fix itself.