Olshansky, who threw a punch and was penalized and ejected from the game, was fined $10,000.
The play occurred as Jake Plummer spiked the ball at his 35-yard line with 35 seconds left. NFL spokesman Greg Aiello said tapes showed that while the other 10 Broncos stood up, Nalen went at Olshansky's ankles. Olshansky retaliated with a punch at Nalen, was penalized for unnecessary roughness and kicked out of the game.
The Broncos have long been criticized by coaches and players from other teams for their system of cut blocking. It is an annual subject at the NFL meetings and the rules have been modified to penalize certain cut blocks thrown by two players.
As is the custom among offensive linemen in Denver, Nalen declined comment when approached in the locker room Wednesday. Coach Mike Shanahan wasn't available after practice.
"To me, I think the league office has made a statement that they're not going to tolerate that kind of activity," Chargers coach Marty Schottenheimer said. "Our game doesn't need any of that, on either side."