Apparently Buffalo Bills head coach Doug Marrone got into an argument with personnel man Jim Monos. It got so loud apparently that general manager Doug Whaley tried to stop it and Russ Brandon, who has been managing the team since Ralph Wilson passed away, told the parties to shut up.
Apparently then Marrone and Whaley then needed to be separated, and all of this occurred within ear shot of the players.
So what exactly caused the issue? According to Mike Florio of Pro Football Talk, it was the decision to sign Kyle Orton late in the preseason before the final cuts were being made.
"[H]ere’s what caused it, per a league source.Marrone wasn’t happy with the decision to sign quarterback Kyle Orton so late in the calendar. Orton’s arrival post-preseason, with the kind of contract that suggests he’ll possibly be playing, potentially shakes starter EJ Manuel’s already fragile confidence."
It makes sense that Marrone wouldn’t want to shake the confidence of the young quarterback, and a veteran with as much starting experience as Orton has certainly can cause Manuel to look over his shoulder.
The flip side of that is that it could motivate Manuel too, but given Florio’s description of Manuel’s confidence that seems less likely.