Using a small screwdriver to get under the plastic cover, it is possible to gradually work around prising the plastic away from the adhesive sheet.
All to no avail though as once all the screws are removed, you realise that the metal backplate is spot- welded to the aluminium frame all the way around the edge and dozens of spots in between.
No separating the layers I'm afraid, so little point in prising off the back.
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like:
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