It's what I've seen on a couple different reaction videos on YouTube, so no hard evidence. I know Frost was asked about it in his presser and he didn't elaborate on it.
Whatever happened, clearly worked as our offense got on track.
One thing I recently learned is that Scott Frost took over the play calling duties in the second half.
Gotta say, I commend him for that. We ran roughly 20% more and Casey Thomspon averaged about 3.5 more yards per completion and we scored 24 more points than with Whipple.
Saved his job for another week.