Tube worm? On hammer coral

[hillegom]

You have lots of those in your aquarium. One less will not make a difference.
Leave the rock in the aquarium and just break the worm off at the base with a pair of tweezers or a spoon or a ?

[Newreef]

Uploaded 2 more pics. It's on a branch of the hammer and from what I can tell it is not in any way harming my hammer. So it sounds like just leave it and don't worry about it unless I see my hammer acting strange?