BUMP
A coworker suggested I clean the track really well, so I took a wire brush and some bathroom cleaner and scrubbed it until it shined. Closing still seems fine, but opening doesn't seem any better. I know there are special lubricants for the track that I could put on it, but the back roller only seems to roll in one direction. I am pretty confident this would be a 10 minute fix if I could get the door out and just replace the rollers, but I can't for the life of me figure out how it comes out.
Sorry, that was a mistype. I meant anti-lift. I can lift the door slightly, but the bottom of be door doesn't clear the track it rests in. And even with the rollers lowered, the top doesn't clear the top of the frame. I don't there is enough clearance to simply lift it up and swing the bottom out of the track. The frame itself looks like it would need to be removed, but I can't figure out how
I see what you mean now. It doesn't look like you have any room at the top at all. Try adjusting the wheel so that the door will lower itself onto the bottom track. Maybe then you can remove it. Alternatively, your door frame header might have settled and that is why you have so little room at the top. You might need to contact a contractor in your area to help with the repair.
This vinyl door has an aluminum track. check the height of the rail inside and outside of your slider. It looks from the picture as if the outside is lower. The stationary has brackets that hold it in place. Remove them and the panel should slide away from the jamb and (hopefully) lift out to the outside. You may then be able to get the slider out from the outside. If not, you are probably going to need professional help.
I was able to remove the screen door and fixed door from the read, then adjusted the sliding door as low as it would go, but couldn't remove it. There was a vinyl strip/cap that went along the track, between the sliding and fixed doors, so I lifted it up and off, and *almost* got the door out the back, but the roller wheels won't clear the aluminum track. After putting it all back together I noticed a similar vinyl strip along the top that looks like it should pop off, but it must be glued. It isn't budging. I think removing it would provide the clearance j need.