Ainge said it on his show multiple times during the summer. I'm not sure if the podcasts are still up anywhere. You could go to the Swain Event thread and ask Stokes to confirm that.
Plus, Jones or Bajakian said Worley only had one true option called against I think Utah State (but there were plays that Worley made the call to pull on the fly even though it wasn't a designed option). I believe it was after an early week practice. I'm trying to remember which show I heard that on.
Edit to add: apparently Doug Matthews has said it a couple times as well.
Those podcasts aren't available anymore. This is a spread offense ran out of a shotgun. That doesn't mean every running play is a "read option" play. If it's not a called option then he is going to keep it. The problem, from a perception standpoint, is that none of us are in the huddle and the run plays all look the same. it looks like Worley should keep on every single play. But that isn't the case. Should they call more options for him at times, yes. But he isn't a running QB. He can do enough to pick up some positive yards and extend plays and move withing in the pocket, but he isn't ripping off 20 yard gainers. The coaches call plays and mold the offense as best they can to the personnel they have. As far as last night goes, I wouldn't have called any options for him at all with the way he was getting beat on every time the ball was snapped. No sense it giving the defense a free pass to tee off on him. I do think the play calling was suspect at times. The sweep to pig late, going 5 wide on 3rd and 2 near the goal line when the o-line was actually getting push at the time. Regardless, the o-line was a liability and it didn't really matter what was called most of the game. The moral of the story is that a large percentage of the run plays called are not "read option" plays.