All due respect to bosoxmal, but "last days of Pompei" is a silly analogy because the people of that city barely knew what hit them. The volcanic eruption caught them completely by surprise.
The injuries to Moreland and Holt and others turned out to be more positive than not because we got to see Chavis, Hernandez again, etc.
What makes things tricky for Cora right now is that he has to keep 13 pitcher, 8 relievers, which means he only gets 3 spare lineup players--a second catcher and two extra infielders/outfielders. However, what Cora normally likes to do is field lefty bats vs. righty starters and vice versa. Plus, if Leon is catching, he likes to get Chavez into the lineup as DH, 1B, or even 2B or 3B.
Right now the least versatile guy among the 12 lineup players is Moreland who can only play 1B and also seems slower than usual. However, he still has that .852 OPS and pretty good against righty pitchers, which the Sox see more often than lefties.
So, while I agree Moreland could be expendable/tradeable, I can also see reasons for keeping him. After two hitless games since returning, last night he had a double and a single.