Yes. Touma's Imagine Breaker did not do anything against Othinus because several reasons, mainly because her ascension into a Magic God involves tools beside her own body; just like he can't revert the Angel Fall spell by touching the afflicted; to 'negate' or actually 'restore' things he needed to find the source of the change and destroy it, in this example the eye she sacrificed as nod to Odin's legend.
Speaking of which...NT 15 is just around the corner. Also A Certain High School has been leveled to ground thanks to a the High Priest antics so Touma got transferred into Kamisato's school.
