So, cut a guy that should be on the 53 so you can keep another guy and "sneak" him on to the practice squad. If another team is eying a player he becomes more derisible after being selected for the initial 53.
The bills kept 1 more OL than last year. And for a couple possible reasons;
Serviceable OL are in short supply so having an extra is a good thing. OL is one of the toughest positions to call a guy in on short notice that can contribute. Is Spain still hurt?
Or, they feel they can trade a guy for players/picks at a later date.