Upload & Sell: On
A few months ago, I took photos and wrote up a description to sell my CZ 35-70/3.4 it on the auction site. It has a jaggedy mark on its front element coating. Not a scratch, a mark. Then I recanted. It still takes great photos, yet its resale value is compromised.
Have you considered sliding a small, flat-bladed screwdriver in, and carefully wiggling, torquing, and/or prying it - just a bit? You could even put a layer of some thin yet resilient polymer sheet under the driver bit, to protect the lens barrel beneath.
OTOH, taking it apart could be a most-excellent adventure. Please, keep us posted.