Okay. So it is alive, and fine. Here is what happened. It was in too shallow sand I'm thinking. It's the pink and green species. When I went to move it, the whole "head" came apart from the tube in one piece. I replanted the head thinking it might still be alive, and left the tube because I felt it and there was something inside it still.
Two hours later, the the tentacles were open in the dark and had great extension. I pulled out the tube and it seemed like there was guts inside of it. Kinda like chicken guts and it smelled bad, not death decay, but definitely not something I wanted in my tank. My crads and snails were all over the old tube. The tube went in the trash.
Bottom line is that it shed it's "head" (for better lack of a word) just like feather dusters do and its now fine for the moment