I fixed my jammed cigarette lighter problem using the following procedure.
Tools: I used a steel blade feeler gage. These can be found at any store that sells auto tools. It looks like a miniature tongue depressor but is made of steel and usually consists of a selection of blades from .001 to .025 inch thickness.
Procedure: Insert a gage ( use one in the .016 range ) in the bottom edge of the lighter access door. This is the edge towards the back of the car. Try to get a slight angle on the blade as you slip it in. Don't try to insert the gage perfectly vertical but try to angle it so that you are feeding it in a forward moving aft direction. Once you have got about 1 to 1.5 of insertion, using the other hand try to open the lighter door. This is a trial and error process, so don't give up. Try a different thickness gage. It took me about 5 minutes of trials before mine opened. This process left no marks or scuffs on the plastic. Good Luck.
Larry Zajdel 99.5 1.8 TQMS

The cigarette lighter in the center console beneath the armrest also got stuck in my Audi, and I used the corner tip of my license (a drivers license is firm but flimsy enough to get the job done. But a credit card will snap in half so don't use it!) and slid it into the groove towards the back of the car, then "pressed" it upward causing the cigarette lighter to pop back out.