You were still passing the whole way, and it was fine. I didn't have a problem with a single thing you did in that game. A 21 point lead is definitely not safe against someone with a good offense, as evidenced by the fact that I came back. Passing there was no problem. In fact I'm glad you did since the Bailey pick helped get me back in the game.
Plus I was still clearly trying to win. If I'd conceded and was running clock, I'd expect the same courtesy, but if you're facing someone who still has a chance to win the game (which I did) and is still running their normal offense (which I was) you're 100% free to do the same.