So after doing some reading, what I thought was the sweeper tentacle was actually the hammer expelling zooxanthellae. You can actually see it in the vid I posted above. It is doing it again today. I would say this is not good. Hopefully I am not killing this thing. It actually looks worse today when I compare it to the video from yesterday. Having the lighting far subdued today doesn't seem to be helping, and like I said it actually looks worse. The tentacles are so far retracted that it is barely even moving in the current at all.