Hey Bengals fans, was wondering, why/how did Davis-Gaither wreak so much havoc week 17?

Happened to be looking over some IDP stats, and I noticed this linebacker just went off week 17 last year

https://www.espn.com/nfl/player/gamelog/_/id/3917142/akeem-davis-gaither

6 tackles, 3 assists, an int.... did he get promoted to first string or something?