Toone was released by the Lions during the final round of NFL roster cuts. I figured he would be added to the practice squad shortly after he was released, but the Lions went in a different direction by keeping wide receiver Nate Hughes and signing a bunch of players released by other teams. Toone is back now, though.
Warren was one of the players brought in from another team. He was released by the Steelers during the final round of roster cuts after reportedly having a pretty strong training camp, and he is now once again a free agent.