Quick update:
The nem was looking good in the QT so I put it in my DT on Saturday. I turned the pumps off for about 15min and it was able to attach it's foot. It's settled in between the rock and the sand bed. I'm thinking of giving it a tiny piece of salmon tomorrow that I have frozen. Hopefully it eats! Mouth is still tight and tentacles still pretty sticky. Everything still seems to look good, I can't wait to see what color it ends up being.