I'm less worried about Cox because he's only 19 and still developing as a player, and he is a very good contested mark, with the ability to time his run at the ball (compared with, say, Cammac, who usually appears belatedly in the frame after an opposition defender takes an uncontested mark). Without the rain he would have ended up with 10 or so marks yesterday. He's not a bad field kick, but just needs to kick through the ball when shooting for goal - just needs a bit more confidence. I agree he looks confused at times, but don't most of the the Freo players? And if that isn't a coaching issue, nothing else is.
I'm more worried about Lachie Neale. In the previous game I noticed that, in the last quarter, he appeared very frustrated and a couple of times handballed and kicked the ball without bothering to look where it was going, i.e. going through the motions. Yesterday he was less competitive and seemed out of sorts. I think this is beginning to show up in other players and has to be a reflection of team morale in general.
Oh, and I think that's a coaching issue as well.