Smith reverted to the Cowboys' practice squad Monday, per the NFL's transaction log.
Smith was active for the first time this season in Dallas' regular-season finale due to the absence of Tony Pollard (foot). He earned only one carry, but he made it count by plunging into the end zone from four yards away. Smith spent time with the Vikings during training camp before joining the Cowboys' practice squad Dec. 8, and he'll hit free agency at the close of the campaign.