Going to be interesting to watch it play out. The fact that he is not willing to say for sure one way or the other makes me think he will be back on the sideline for the bowl game. Leading up to all the other games since he came back he has left no doubt as to where he would be coaching from.
The part we have no real way of knowing is where things stand on his seizure treatment. I don't believe there have been any reported incidents but who knows what happens outside the public view. If they do finally have a strong handle on his condition then I could see him having a desire to return to the sidelines because as much as he can appreciate the view from the booth, he has been on the sidelines for most of his career and I would bet no matter what he says that is where he wants to be coaching from.
I am sure it is a really tough decision to make though because even if he feels like they have his condition under control, another sideline incident, especially in his first game back on the sideline would cast a major cloud over his long term prospects of being able to manage his seizures. The safe choice would be to stay in the box for the bowl game and revisit the idea of coaching from the sidelines next season but obviously he is going to make the decision that he thinks is right for him.