Hammer looking like Torch

I'm sure that this is just because it is not getting a lot of light on the back side of the coral but has anyone had their hammer extend out this far? The "tentacles" are extending about 2" further than the rest. The coral is happy as could be and is my oldest coral that I've had for almost 2 years but was just curious. 

Mine does that same thing all the time. They act like sweeper tenticles and sting other corals that they can reach. Did you recently add a new coral that is in the area near it or where the water flow could be blowing across a new coral and then to the hammer? Most corals produce chemicals that they release into the water and if those a carried to a coral that is not a friendly species to the hammer it could extend the sweepers in an attempt to sting and remove the other coral. Nothing to worry about unless they can reach another coral.