Vaughn reverted to the 49ers' practice squad Friday, per the NFL's transaction log.
The 49ers elevated Vaughn from the practice squad to the active roster ahead of Thursday's game versus the Rams.
The 49ers signed Vaughn to the practice squad Tuesday, David Lombardi of SFStandard.com reports.
The 49ers cut Vaughn from the practice squad Tuesday, Jennifer Lee Chan of NBC Sports Bay Area reports.
Vaughn signed with the 49ers' practice squad Thursday.
The 49ers waived Vaughn on Monday, Cam Inman of The San Jose Mercury News reports.
The 49ers signed Vaughn on Wednesday, Nick Wagoner of ESPN.com reports.
The Patriots released Vaughn on Tuesday, Evan Lazar of the team's official site reports.
The Patriots are expected to sign Vaughn to their practice squad, Ian Rapoport of NFL Network reports.
Vaughn (coach's decision) is inactive for Sunday's game against the Panthers, Scott Smith of the team's official site reports.