Should I Iodine Dip this receding Pectinia Space Invader

[bumpyj38]

I recently defeated a very toxic strain of Dinos (Ostreopsis) in my reef tank. Most of my corals have begun perking up and looking better except for a trumpet coral and this Space Invader Pectinia. It used to be really meaty and healthy and now it is obviously not doing well. It has receded a significant amount. It has been a week since and have not noticed a change.
Should I Iodine dip this coral or leave it alone so not to over stress it?
Pay no attention to the Cyano and diatoms in the background. This is purposefully done to out compete the remaining Dinos (non toxic amphidiniums) in the tank.

 

[bumpyj38]

Edit: Actually after looking back at pictures I would say that it has receded slightly more since last week.