Ok, this is how I see the offensive line
Flozell Adams LOT (Petti backup LOT) McQuistan backup both OT
Kosier LOG
Gurode Center Al Johnson backup
Riveria ROG Proctor backup to LOG & ROG (also Gurode can play G)
Fabini ROT (why he has blocked better in runs & decent pass protection) Colombo backup ROT
Thats 10 offensive linemen, I think they will keep 9, Stephen Peterman is on the way out. They may try to move Proctor to pratice squad, but keep McQuistan on full squad. The Raiders would grab him up in a heart beat, being the twin brother of Pat, that is starting OG for the Raiders, and you know how Al Davis likes to raid the Cowboy players sometimes.