The helmet slips off to reveal the more vulnerable panels protecting his brain module.

At the look of shock, Megatron sees his opening and takes it. With the pressure abating on his midsection, he lets go of the Prime's head and shoves him off and to the side, making sure Sentinel's face gets another gift via an elbow to the head before struggling to get back up again.

He takes a second to spot what he'd been looking for to begin with, and makes some space in between them.