His 2 mistakes are the flap from the corner then they hit the bar and the the pen that killed the game, the save was a bit unfortunate but its not like he hasn't pushed into danger before from far lesser shots. But I don't blame him for that goal, it was weak play elsewhere.
You seem to have it in your head I hate the bloke, he's done well for us, just there's no consistency in how Appleton dropped grimmy and not him, plus he just isn't as good a keeper, marginal in most areas maybe but those margins add up.
I'd mention mistakes Grimshaw makes just as much if he was in. Infact I've openly said before ideally we'd have a big keeper who can collect from crosses and because of his size makes saves you wouldn't expect the average keeper to make.