Ok, that isn't hard to remove at all.
Here's a quick write up for you.
Things you need: 1 metal cloths hanger
1) Cut the ends of the cloths hanger so that you have 2 "U" shaped pieces. Make sure the two ends are fairly parrellel. And, they should be probably 3 inches from curve to each of the tips.
You will see four holes in the face of your radio (2 on the left, and 2 on the right) You will end up sticking the 2 ends of each piece of wire into them.
This pic kind of shows 2 of them.
This is the mounting clip that you are using the wire to depress.
By sticking the wire into the holes, you are pushing the clips twords the radio (twords each other basicly) alowing it be slid out.
You can kinda see that here.
You will need to slighty push the two things of wire away from each other slightly to help move the clips. Like so.
Then, you just use those peices of wire as handles and just pull them and the radio SHOULD come out with them (remember to still be pushing apart slightly). It might take alittle bit of muscleing/ wiggling around, but it should come out fairly easily. Oh, by the way, I am assuming you know this, but both pieces of wire need to be in the radio to get it out. I only showed one becuase I lost the other one and didn't want to make another one.
And don't worry, I didn't take my radio out just to show you, haha. You can kinda see a Kenwood box in the background of a few. That is what I was putting in yesterday.
I hope that helps you, if you have any questions/ problems, just say them and I'll do my best to answer/ help you with them!