sometimes the spring clips get bent back the wrong way and its just impossible to get the removal tool on the right side to make them release. At that point there are two screws above the radio, and one in the back of the dash that hold that front panel in place. If you can't remove the radio you will either need to break off that last screw behind the dash, or you will need to break the radios face off. Neither one is a big deal, just pull the dash straight out and the screw mount will snap off or stick a screw driver into the holes the removal tools are supposed to go in and then pry it up/down till it breaks off.