Headrest inserted backwards and now unable to

Raise the headrest up all the way as high as it goes. There are plastic pieces on the seat where the headrest supports go into the seat and one of them has a small hole in it. If you get a paperclip and push it into the hole, the headrest will pull up and off.

factory service manual 2000. I posted the book free here 300 times.
as they say RTM , read the manual>?
Ill quote the pages for you .

"REMOVAL AND INSTALLATION
HEAD RESTRAINT SLEEVE
REMOVAL
NOTE: When replacing a head restraint sleeve, the
retaining tabs on the sleeve will be damaged during
the removal process. Check the availability of
replacement parts before servicing.
(1) Raise head restraint to the full up position.
(2) Turn head restraint lock thumbwheel to release
head restraint and pull head restraint upward to
remove from seat back.
(3) Insert head restraint sleeve extractor (special
tool 6773) (Fig. 1) and (Fig. 2) into the seat back.
(4) The retaining tabs are positioned on each side
of the sleeve, when inserting the extractor, ensure
that the flat of the collar is facing the side of the
seatback (Fig. 3).
(5) Using a small hammer, tap extractor downward
to release sleeve retaining tab.
(6) Remove extractor tool from sleeve, rotate tool
180 degrees (Fig. 4) and repeat steps 3 and 4.
(7) Remove extractor tool from sleeve and remove
sleeve from seat back."

Remove headrest, there is a small button on the base of the headrest mount you need to push in. Next pull up the strap at the front of the seat cushion bottom, then flip forward. Press in the flipper on the top of the seat back and pull forward.

Where they slide in at the top of the seat there should be a release button on each side. Press and pull at the same time and they should pull out. Then just push them back in

There is usually a "button" on the side of the headrest support... the rectangular plastic piece at the top of the seat where the headrest bars go into the seat itself. Hold that while pulling the headrest out.

I turned my headrests backward. Worked great. In fact, I wonder if the engineers designed them that way but the production guys build them backward???
1) Tilt the seat way back to allow room to remove headrests, 2) Press and hold both headrest release tabs at the same time and have someone else pull out the headrest completely, 3) turn the headrests backward and insert into the two headrest guide slots (headrests fit the same either way). 4) No more pain in the neck !!!
Caution: I do not know what this does for whiplash injury protection but it seems OK for my own comfort with the solution. And it beats the pain in the neck caused by the bass-akwards design.

On my F150 (2002 model), there is only one release button. My daughter had removed the headrest, and put it on backwards. It was locked in place, so I couldn't get it off until I noticed a little pinhole on the opposite side of the side with the release button. I inserted a paperclip into the pinhole, and it released the locking mechanism on that side so that the headrest could pop right off.

Pull the seat fabric down in front to expose the plastic piece that the headrest bar inserts through. You will see a small wire clip inserted through plastic. Remove it by prying with small flat head screwdriver. Repeat on other side. Headrest will then slide out.

Lift the headrest to it highest postion. Insert a thin stick parallel to the head rest bar (the side facing the rear of the vechicle) I used a thin paint stirring stick, a Slim Jim is ideal.
Once the stick is inserted (10" give or take) push the head rest down holding the stick steady, then pull the headrest back up and it will come off the seat.
Hope this helps.

The headrest has on obvious button to adjust the height and another button kinda hidden to remove the headrest. The black plastic ring at the base where the metal poles insert into the seat is where the two buttons. You probably noticed the obvious on that sticks out of the side of one of the rings. The other plastic ring contains a similar button that is not noticeable due to it being flush with the side of the plastic ring. Adjust the headrest to its highest position, then locate the "hidden" button on the other plastic ring and depress it while lifting on the headrest and it should come out.