Helm reverted to the 49ers' practice squad Monday, per the NFL's official transaction log.
The Duke product was contained to only special-teams usage over his first three NFL appearances Week 6, 9 and 10, but he fielded 21 of 84 offensive snaps against the Cowboys. Helm didn't attract any targets in the passing game, however, as Ross Dwelley paced the tight end position with two catches for 28 yards.