Question about leather?

[Dean29G]

Hi everyone,
I have a leather that has been in my tank about 6 weeks now. It was doing great.


Then it closed up about 3 or 4 days ago.



Then it opened up and the polyps didn't come out. It also layed down on it's side.




I spoke to the guys at SWC and they said he may be "shedding". Well when I came home after talking to them, there was a "skin/film" hanging off of him, and the polyps were beginning to show themselves.

Now, should I have any worries about this? All the tank parameters were tested yesterday and they were good. Also did a 5 gallon change. It is a 29 gallon tank and 15 gallon sump/refuge.

Thanks Dean