It was a red card, and he deserves the ban because that's the law.
However he definitely doesn't deserve the stick he's getting for fucking up. We're supposed to get behind our players.
He's not a left back so always gonna look poor when he can't even cross with his right foot. Still a top player and will be our right back for years to come.
Just because something works well in one game doesn't mean it'll work well in another. Teams come alive to the way things operate; tactics evolve. Just look at the drop off from our form over xmas.