Is #5 Bigelow? If so, you see him make a very nice spin move and cut early in the video showing a lot of speed.
Later, you see #5 again, and he stutter steps and loses all momentum and get tackled pretty easily.
I think that in a nut shell shows his ability/weakness. One good thing is I think gould is especially adept at teaching the RBs how to keep leaning forward to keep their body moving instead of stutter stepping. Isi used to have this problem too.