You will need to get the right tools to remove it. It is 2 thin "L" shaped pieces that are mostly flat with a little indention on the long end of the "L". This indention grabs ahold of the sides of the radio when you slide it in the two slots you are seeing. Once its grabs, it should slide neatly out of the metal sleeve.
__________________ -There are 10 kinds of people. Those who understand binary, and those who do not.
-If we ever forget that we are One Nation Under God, then we will be a nation gone under...Ronald Reagan