Roushar got the OC gig when Treadwell left as a safe choice. Problem was the he did a job pretty good with the O-line before his promotion. Now what does Sparty do? Bring in a proven offensive coordinator who is new to the program and may have a different philosophy or promote from within to maintain stability? In either case, can't imagine the offense is going to that much better.
further adventures in Jed York being unsuited for his position