One way to remove them is to (and what I personally do with this coral and previously Xenia):
Coralline purple reef epoxy (I use this but any epoxy will work or even superglue)
Time work before regular scheduled maintenance / water change
Put on some calm music
Crack window open
Glove up
Goggles
Ladder or step stool (my display is 30" tall + 30" tall stand
Place towel under and 1 over shoulder for clean up
Bowl of ro/di water - stable area so not to fall
Step back, assess display, visualize what you want to remove and why
Reach in, clamp forcep on stalk base, as close as possible to the rock
GENTLY lift left to right slowly and it should start to peel off rock
Lift out of display, drop in bowl of water, rinse
Repeat until done
If done properly you should have most of the Kenya Tree off the rock with no tear. There may be a small bit of the coral on the rock surface. Now that you are done you can look at it, pull out some of the epoxy I noted above, mix it up, then reach back in and smooth some over the areas you see. It will blend in with the rock. You can also glove up again, place some superglue on your finger, then reach in and smear it over. I prefer epoxy but both work.
The idea here is to prepare, visualize what you want to remove, clamp as close to the base of rock as possible, and slowly lift while pulling left and right back and forth. If the stalk is too big for your forceps you can use your hands gripping the stalk. Same thing, idea.
Once done now do your normal water change and toss in a bag of carbon. You are done. Hopefully this makes sense.
