Realizing there were, in fact, two cons present, Sideways sees Arcee, Elita-One and Chromia coming and notices that he's heading to a restaurant, he transformed into robot mode and got past the restaurant, but the Arcee Sisters are still chasing him, once he passed the restaurant, he transformed back into alt mode and drives away, since the Arcee sisters weren't able to do enough damage at Sideways, N.E.S.T. And Autobots got an Energon reading on Demolishor, he transformed and attacked, prompting Sideways out of hiding.
Sideways tries to flee from Arcee Elita-One and Chromia Transformers: Revenge of the Fallen He went into hiding from the Humans, finds refuge behind the giant Constructicon Demolishor.
