The instructions that came with my style bar to remove them was to raise them all the way up and then use a slim Jim and go down he front side (along the metal slide) and push down while pulling up on the head rest. I did not find this easy and that is why my seatbelt holsters still are not on!
2004 F150 4x4 Lariat Supercrew, 5.4l, Black/Arizona Beige (daily driver)
2002 Mustang GT Convertible, triple black, mach 1000 system (Summer Car)
2001 Ranger Edge 4x4 xcab (sold to cousin)
4.10 Gear/RPM thread