What can we infer about Quinn when he says, "It wasn't Dwyer. It was fear. it seemed to follow me like my shadow these days, but I recognized now how it was trailing everyone else, too" (171)?
Dwyer telling him to "leave it at the door" about his disagreement with Guzzo was Dwyer not knowing what happened to Rashad.
Dwyer telling him to "leave it at the door" about his disagreement with Guzzo was really just Dwyer's fear about what would happen if they continued to challenge Guzzo, Paul and the brutality against Rashad.