A short piece of copper tubing is an excellent tool for removing drywall. First locate the nails, either by prying loose one edge of the drywall panel or by tapping your way down the studs. Then place the end of the tubing over the nailhead and give it a whack with a hammer. One hit is usually sufficient to isolate the nail from the drywall. Repeat this procedure for the other nails in the sheet, and it should pull off the wall with no struggle.
Peter Lewis, San Francisco, CA
