Goniopora spawning or something else?

[Swede Reef]

I have a few gonioporas. Yesterday a hour or so before lights out one of the gonis started expelling a milky translucent substance. Is it spawning or expelling xoantelle? Looked really deflated and seems to be fully recovered this morning. It was a bit stresses I am sure as the evil pistol shrimp knocked over the rock. Had to move it after it stopped expelling mucus lookin fluid. Any ideas?
Video below not the greatest as it was in a tough spot.

 

[pomoev]

I think it's just renewing its mucus. I saw somewhat similar behavior when I fed my acans a certain powder food that they didn't like.

 

[Reefkeepers Archive]

Expelling waste and digested food

 

[Swede Reef]

Thank you , it got bounced around a bit when the rock fell over. Sounds like waste to me as well. Fully recovered now in a new temp spot.