I'm kind of leery of offering much credit to Schottenhiemer when it comes to the running game. Especially, since he got his start under Martz and Jets fans I've talked to and read pointed out how he would abandon the run at times only to get forced back to it by Ryan.
That coupled with reading awhile back how the running game is usually a joint effort, at best, with the Oline coach for most OCs and how, in many cases, the Oline & RB coach are really the key cogs via run play development makes me wonder, too.
In New York they had former HC/OC Bill Callahan as OLine coach while he was there. Here, there's Boudreau.
I don't know. Maybe he has a HUGE influence on the running game. But, I'd venture a guess that his OLine coaches have played a much larger role there. Sure he's had some imput, but I wonder if he has merely just called the plays.