IIRC, the manual states that you can use a piece of masking tape on the grill to pull it away from the panel. I stuck the tape against the cloth and pulled one end vertically (in parallel to the cloth surface), similar to removing one of those 3M Command strips.
just be careful to not press hard when applying the tape to the cloth or risk touching and damaging the diaphragm behind.
just be careful to not press hard when applying the tape to the cloth or risk touching and damaging the diaphragm behind.