Orr was released by the Rams on Saturday, Gary Klein of the Los Angeles Times reports.
Orr (undisclosed) was placed on the Rams' practice squad COVID-19 list Thursday.
Orr (groin) was activated from injured reserve Saturday, John Glennon of BroadwaySportsMedia.com reports.
Orr (groin) was designated to return from injured reserve Wednesday, Mike Organ of the Nashville Tennessean reports.
The Titans signed Orr to the active roster Saturday, Jim Wyatt of the team's official site reports.
The Titans waived Orr on Saturday, Jim Wyatt of the team's official site reports.
Orr was promoted from the practice squad to the Titans' active 53-man roster Tuesday, Jim Wyatt of the team's official site reports.