I agree completely. That scene was absolutely retarded. There are dozens of different ways they could have had Mikoto going dere, but they chose the most random and illogical one.

It is also retarded how Touma was so late to react to every single situation. The girl was visibly hurt from whatever spell she activated, and with the detailed explanation he got on the way there, Touma should have instantly reacted and dispelled her immediately. However, he had to wait for Tsuchimikado to tell him to do it, just like he did for almost every single useful thing he did the entire episode.