Posted 21 March 2013 - 04:25 PM
I think there's a touch of nitpicking going on here. I agree with Pinkie Baelish, they're clearly just marching. In Season 1 when Jon kills the wight to protect Lord Commander Mormont, he appears pretty nippy when he storms across the room after Jon, so I wouldn't bet on them going with The Walking Dead-esque shuffle.
Although, even if they did then they have simply chosen to portray the wights in a more traditionalistic way, they are, after all, essentially just zombies. It's the leaders that truly matter.