I wouldn't say there's a QB controversy, but what I would say is none of the QB's (especially Ty) can get comfortable in their position. During the game it was revealed that DeBoer and Grubb decided to "put some competition" into the QB position and basically told Ty during the week that they were going to let Austin Mack have some reps during the first half. Apparently, the purpose was to set a fire under Ty to let him know that just because he's the starter today, it doesn't mean it's his for the rest of the season. It worked and all three qB's ended up getting quality playing time and throwing multiple touchdowns.
My question is, why wasn't this done last season? If this were done last season we may not have lost four games... but I digress. I'm not going to delve back into last season. What's done is done.