Spikes is a package-specific player in this system. A run-stopping LB. The team was mainly in sub defenses against the Falcons. That's why Hightower got more reps. Hightower is a better all around 'backer in my opinion. Now with the Wilfork injury, I wouldn't put it past this coaching staff to line up in a 34 defensive look and just send Spikes into the line on an every-down basis.