What you'll need:
- A tablet (or phone) with a damaged screen
- A decent suction cup (can be from a car-window phone holder)
Now just watch the video or follow these instructions:
- Now what you'll want to do it first clean the suction cup to be sure it won't damage your screen.
- Second, put the suction cup on your screen just outside of the stain.
- Gently pull on the suction cup and you should see the stain shrink.
- Don't get too hasty now! Just remove the suction cup again and place is a bit closer to the stain again.
- Gently pull again.
- Repeat until the stain is gone.
- Congratulations, your screen is perfect again!
Note: In hindsight I did find a few website detailing this procedure, strange that I didn't see them the first time around:
http://forum.xda-developers.com/showthread.php?t=468840
http://forum.xda-developers.com/showthread.php?p=20389610