This was an answer in a mail box to Tedy B....
"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."
I was thinking the samething with Spikes. Have him just use his insticts as to where a run would take place, which he has a great feel for shooting the hole and blowing up run plays in the back field.
This would help to get our best players onto the field as our linebackers is a strength, but Spikes sits for sub packages... This way they can keep him on the field more often.