Here is some updated info from the guy on michigan reefers.
Here are a couple of pictures. Here is the "trophy" shot. Barry with "his" worm.
This one interesting. This is a web tunnel he built. It allowed him to travel between rocks. It starts out as a web then he adds coral frags and bits to it.
Now on display at Choice Aquariums. Anyone buying, I'm sure they will let it go cheap.
Here is the scary part to me. Choice set up a 10 gallon tank for it. They thought people might want to see what it looks like. They tossed in a couple of small rocks, nothing over 3 inches. It is gone! It dug its way into one of those rocks. So a 5 foot worm can hide in a 3 inch rock. If that doesn't scare you I don't know what in this hobby will.