The goby could possibly be in a little be of shock and be stressing out. Gobies are pretty solid creatures so I would just give him time unless you see signes of parasites or disease.
As for the coral, it probably isn't dead but is just stressed from being shipped in cold water for 2 days. I think your best bet is to them time. HTH
3' fine sand bed 1x Orange Stripe Prawn shrimp goby, 1x sixline wrassemated pair of true percula clowns, 1x CBS shrimp, 2x peppermint shrimp, 1x pistol shrimp, 1x tiger tale cuke
, ~20+ snails, ~10+ hermits, 1xserpent star.
green Bubble coral, hammer coral (8 heads!) ,various Zoos,green finger leather, green star polpys ,shrooms
175w 10k MH
28w actinic 03
2x maxi jett 1200
Prizm skimmer (modded)
Hagen powerfilter(for running carbon 24/7)
nano arctica chiller