Be careful. It's only plastic and don't blame me if you break it.
1) Remove the rubber pads at the bottom of the keyboard to reveal 5 screw and remove those too.
2) Remove the two little rubber covers from the dock to reveal 2 more scres and remove them.
3) Use a plastic tool to split the keyboard and prise apart the plastic clips holding the bottom and top halves. I used plastic dental tooth picks and found it easiest to start from the hump at the top left back of the keyboard. Be careful and work slowly and as gently as you can to avoid damaging the clips.
4) Use a flat headed screw driver to press the clips on the underside of the white half of the keyboard to unfasten the black dock. I found it easiest to work from the middle to the ends and then gently flex the dock to pop it out.
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