I have not opened one of these displays. I am sure its a clip system. Have you tried pushing in a thin cauking knife or file or something, sliding it down to see if there are clips?
This shouldn't be too hard. And, in regards to lowendmac's post. I think thats quite silly. I mean, it is dangerous, just have to be careful. I guess they want to encourage people to not be as scared and to jump into it, and while, I agree to a certain extent, I would rather someone be aware of the issues than oblivious.
Someone else might have some real experience here with this monitor and followup with a more advice.
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"Fix it 'til it Breaks."
Jacob - EiC & Director of Technology Mac Pro Quad 2.66 - 4GB RAM 160 GB SATA RAID 1 - 650 GB Storage Quad 19" Widescreen LCDs Accessorized to the Hilt