Since we are all speculating that ARll did the firing .... Which is true, as he is the owner and had to sign off on it anyway .... How about we speculate this.
It has been reported that Tomlin was kinda upbeat after the loss Sunday.
Is it possible, especially given the Steelers history of not firing OCs during the season, that Tomlin went to ARll earlier about firing Canada and Deuce said no? Or, I haven't seen enough to fire him based on our record. Is it also possible that Tomlin was upbeat following Sunday's loss because he felt he now had enough ammo to take to Artll to get him to sign off on firing Canada?
I think this is at least as likely as Deuce making a "call from above". My personal belief is that Tomlin wanted to fire Canada after the Houston debacle (when he said "changes are coming") and Art ll said there wasn't enough "stink" to the offense for him to sign off on the firing.