This question is inherently spoilery for a certain mid-to-late game lore area, though I am trying to avoid being more explicit than necessary. :)
Is there any way to decrypt the encrypted terminals in the area off Armory besides DC? I thought perhaps using CRM would give Cogmind the ability to crack the encryption, in light of CRM's proximity and Cogmind's true nature, but it seems not to be so.
Nope, CRM is unrelated, there's currently only one way to do that.
Now that you bring it up though, I can see the value in eventually adding an alternative method, especially since the side effects of DC have changed somewhat since that area was first added, and it's always nice to have multiple methods to do things. I have just the idea, although it could be a while before that's added.