FAST6191 mentioned what I was thinking about the pen. Most people would use the bottom of a BIC pen with a lighter and carefully heat it up. While hot, seat the pen into the screw head to form the plastic part of the pen into the stripped screw head. A bit (not much) of glue in the stripped area of the screw head to attach the newly formed pen will really help. Like mentioned above, be careful with the super glue, plastics don't always take well to it. Hold the pen upright while pushing down until the glue dries. Use downward force on the pen while turning in the correct direction and it should come out if it wasn't over tightened to begin with. You can always try without the glue first if you'd like.
Tried that too and it did not work on my case. In the picture from above after taking the head of the screw off and opening the case I had to use quite alot of force to be able to take the screw out. It was over-tightened.