It's been a while since I've had a squat lobster-Crinoid update. The Crinoid feather star is still doing well; it is extending its arms farther and more often now. So far I haven't noticed any deterioration of the arms, even with the squat lobster living on it.
The squat lobster is also doing very well. If a squat lobster could be happy, I would say this one is quite content. The photo above shows the squat lobster, named "Darth Vader," eating the Mysis shrimp prize it found in one of the arms of its feather star.