Well after reading around everyone says to use a hacksaw blade or to open the seat up. Here is a way to do it in 30 seconds per seat. And There is no way to tear anything at all. Go to Menards/Lowes/Home Depot and buy some extra large zip ties. The nice beefy ones that can double as Hand Cuffs. Now take sand paper or a grinder to one side of a tie. Make it 1/4 of an inch. Now slide it right down the grove in the headrest rail and slide it down until it stops. Hold it there and push the headrest down a little as you slide it in more. Now pull up.