Can my friend be released on some type of motion?

A friend of mine has been to court on multiple occasions for a case since about last year. He has already been to jail for it, but eventually got released on bail. Recently he went to court and there was a witness who testified that he threatened them involving the case. After court he was taken into custody. I'm not sure if him being taking into custody had anything to do with the witness's statement, or if they had plans on taking him into custody before that. But wouldn't they need reasoning for taking him into custody, or can they do so just because of the case at hand? After this court date he had another and the witness came back and testified that they were lying and gave their reasoning to why. Is there some sort of motion for release that can be put in for this? Or no because it may not be the reason they took him in, in the first place.