I just watched the replay and the majority of Speight's incompletions were high/long throws. I get that some might be throw-aways, but many of them weren't even close, especially the ones along the sideline or fades in the back corner of the endzone. The two picks were high throws, Black's drop in the first quarter was high, and every long-ish sideline toss was overthrown.
It didn't look like he was leaning back and throwing off his back foot because many of those throws he had time to step into them. Is this a consistent thing with him? I don't seem to remember so many overthrows in a game last year so hopefully it's an anomaly.