one suggestion I read here was to soak it in acetone for approx. 15 minutes to soften up the glue. Then, if you can, use a dead batt to help hold the
thread end and gently wiggle and pull until it comes apart.
I've used the brute force pliers method and ended up with a few minor scratches but came apart all the same - twist and pull process.
Depends on what result you want and the post use your after.