How do you remove a sign from the wall that was installed with double-sided foam tape and/or silicone gel? Without breaking the sign or destroying the wall that is.....
Easy! Just use a piece of monofiliment fishing line and "saw" the sign away from the wall using a back and forth motion. You might have some tape and gel residue to deal with but you won't have a damaged plaster board wall to repair and repaint! ;-)