Thanks for sharing, I'm still waiting to hear back from Dynaudio about the same question and will assume I get the same answer. My only thought now is that you could find an adhesive more robust than the double-sided tape they are using, stick it to the ring attached to some kind of handle and pull straight out enough to hopefully then get a plastic pry tool or similar under the ring to then slowly remove the piece.
What's making you want to do this? I'm curious. I personally have a pair of the light wood Evoke 30s and they are already yellowing after less than 2 years. I was considering refinishing mine.