With regards to Michael, it's important to remember that Friday was just one preseason game and whether he played well or poorly shouldn't really change anyone's opinion on him very much at this point.
I thought he had a mixed performance with some silver linings. We've seen better from him as a runner and also worse. The block he threw on Ford was insane (Ford had a broken rib from the hit). He showed better ball security, though he needs to learn to not stick the ball out for the extra foot when he's 6 yards short of the marker. I think that's just him trying too hard. He always plays 100% amped up, sometimes that's good, sometimes that's bad.
The call he missed sure looked dumb, but it's really not all that different from any other mental error, like for example a lineman forgetting the snap count. Speaking for myself, when I forgot the snap count or the playcall it was because I had a lot on my mind and lost focus. It makes you look pretty dumb, but it happens sometimes.