Walker's a real enigma to me; I'm just not sure what to make of him. He's got a lot of ability, and at times shows flashes of near-brilliance, but sometimes I just don't know what the heck he's thinking. It's not just the occasional penalties; there are just times when he does the strangest things.
Remember that 4th anc 1 in the Panthers game, where Young converted the 4th by diving through the "A" gap - which was left conmpletely uncovered? Quay was quarterbacking the defense on that play. If you watch the play from the end zone view, Nixon was the closest Packer to the gap, about 4-5 yards off the line. You can see him turn to Walker, point at the gap, and ask him if he should plug that hole. Walker shook his head, and waved Nixon even farther back and to the right.
You could see Nixon wasn't comfortable with it, but he backed off about 7 yards, and checked to see if that was where Walker wanted him. Walker held him there, but Nixon just stood there watching the hole and leaning toward it. The instant the ball was snapped, Nixon just exploded toward the gap, with lightning speed, and hurled his body into the hole to block Young's path. It was an amazing effort, covering that 7 yards almost as fast as Young could get through the hole, but he got there a split second too late and Carolina converted.
Now, why in the world would Walker do something like that? What could he have been thinking? I also have to ask, where was Barry at that moment? Bathroom break? Why was he not shouting into Walkers ear to cover that gap? Never seen an explanation for that, either, but the pointg is, it shouldn't have been necessary. A high school player should have known to cover that gap. Nixon sure knew it. Why did Walker not only fail to grasp that, but specifically tell Nxon to back away even farther?
I just don't know what to make of him. There just seems to be some flaw in his thought process at strange moments.