The Steelers made a somewhat surprising roster move on Thursday afternoon, waiving offensive tackle Dylan Cook from the 53-man roster and signing outside linebacker Ade Ogundeji to the practice squad, per a team announcement.

Cook was activated off of injured reserve yesterday, but his stay on the roster was short. However, if he clears waivers, he could end up back on the Steelers’ practice squad.

The Steelers also announced the signing of Ogundeji to the practice squad, who was waived two days ago. It’s been a hectic last few weeks for the outside linebacker, who has already been a member of the practice squad and appeared in three games this season.

This year, Ogundeji has yet to record a tackle, but he did record a pass defensed against the Raiders. For the season, he has 25 defensive snaps and six special teams snaps.

Cook has yet to appear in a regular season NFL game.

Following the moves, the Steelers have two spots open on their 53-man roster, although one is expected to be filled by reinstated cornerback Cameron Sutton, who has a roster exemption until Nov. 4.