I really don't think that was a route adjustment, it was just a bad ball that Meyers made a great play on. I haven't seen the All-22, but here's a screen cap from the broadcast footage (red box is the ball).
Meyers has a ton of room going to the sideline. Byard is a couple steps behind him laterally, and 2 yards behind him. The obvious ball placement is to lead Meyers towards the sideline. If he puts it in the right spot, it's an uncontested catch. Likely minimal to no chance for YAC, but definitely a secure catch. Instead, the ball is behind Meyers and overthrown. Jakobi basically adjusts by slowing down and peeling back. Byard tries to undercut and misses it.
It's just a bad ball from Mac with a good outcome. I can't imagine this placement was intentional. It was probably further away from his intention than the miss to Henry later, but with just a much better result.
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