Might time itself have slipped sideways, showing him a scene from the past?

Unable to wait any longer, they slipped through the opening sideways.

He came a step forward, another, then his body slipped sideways and fell prone.

For an awful moment, the yard seemed to slip sideways.

He slipped sideways, but his strong grip kept him from falling to death below.

Mason raised his pistol and slipped through the door sideways.

Bright lights danced before his eyes and he felt himself slipping sideways.

You might have to slip into it sideways, but do go get it.

He banked just slightly to his left, slipping sideways for the best line.

It looked to have slipped sideways in the air and missed the courthouse by two hundred yards.