Socinus is on the Raptor that jumps to the planet, yet he has previously been placed in the brig for collusion and we did not see him released or acquitted. Actually a deleted scene shows Socinus released on parole by request of Chief Tyrol due to the extreme short-handedness of experienced crew. But the main point is that Socinus is a minor character and viewers cannot expect to see everything relating to a minor character. Usually a line of dialog is sufficient to explain this plot point, but as a scene was filmed and then deleted, there was no convenient place to loop it in later. Key here is that Adama held Socinus to teach the Chief a lesson. No one should have expected Adama to hold a valuable and trained worker for very long in those circumstances.