Grimlock ♥ Ultra Magnus

I was wondering how things were going to go back and suspected it might be the most obvious way - and it was.   Things had to get a lot worse before they'd get better, and there's an interesting time-travel type paradox that is glossed over (if things go back to the way they were before Vic got hold of the horn: why does he remember what happened after he got it since he wouldn't know before he got hold of the horn) but even this wasn't enough to knock off even half a star.   It was a plot hole that helped the narrative.

Also, mention of Robotman, which yay!