Right at 0:57, tower has just said "There's an airplane on the runway", and I think keeps talking, but Flight Check then keys up over tower and says "OK we're going around ... and we're offsetting to the North."
That's why tower is a little more urgent in his next "Go around ... offset..." instruction, because he didn't get the call from FC that they had already initiated that.
Lesson: even when it's urgent, you have to wait until the frequency is clear, otherwise you are wasting a transmission - and time.