https://www.youtube.com/watch?v=ipRQ73nkN6E
yeah, even top goalkeepers do silly things, players play silly passes when not under pressure quite a lot, its just less forgiving when its a goalkeeper.
You clearly do not understand the incident. This wasn't one of those where the striker put the keeper under pressure and he fluffed his clearance or anything like that. This was a ball knocked back to him with only ONE opposition striker about 40 yards out. Yet the keeper decided to rush out and head the ball. Why doesn't the keeper, like they would IRL, let the ball run into his box and pick it up? Why go out of his way to run out of his box, under no pressure and try heading the ball? Answer that and i'll shut up.