Matt Stead in his 16 conclusions on F365:
Which is not to say he did not earn this point. He absolutely did through his conviction and bravery. His explanation for not introducing Rob Holding in the first half to compensate for the loss of a defender was simple: “I didn’t want to send that message to the team.”
He reacted to the situation whereas Frank Lampard seemed to simply ignore it and proceed as before.
I couldn’t have said it better myself. The bravery of the decision to not do the typical thing when going down to ten men paid dividends for Arsenal and ultimately was the driving force in Arteta getting his team to deliver a performance of courage and application that they haven’t been famed for.