Then tilt it slightly with help and remove it from the upper track of the door frame as well.
Out of square sliding glass door.
Every sliding glass door has adjustment screws that hold the rollers of the door in place.
Then gently lay it flat on a foam sheet.
Once removed have your partner help you tilt it and move it out of the doorway.
You may need the philips screwdriver again to free the door from the track.
Use a screwdriver to gently pull the rollers out.
Just pull the hinge pins out of place tapping them from beneath with a screwdriver and mallet if necessary.
For the trim wedge a flat pry bar underneath the edge on one end of a section and gently pull the casing away from the wall.
You should now be able to freely lift the sliding glass door out of the frame and out of the track.
The best solution is to square the frame back up by jacking up the low side from under the house then your door will work fine.
While you might be able to jack up the house with the door frame in place you d need to go slowly since it took many years to settle to keep from breaking or damaging the wood frame or any plaster on the walls.
Once those two steps are taken you should be able to carefully remove the door from the track.
Then remove the door stop at the top of the frame which should be as simple as unscrewing it.
I think we have the details for the contractor that installed the doors 15 years ago and will give them a call to discuss repairs.
This enables the door to come out easily.
Place the door on a pair of sawhorses for easy access to the rollers on the bottom.