Another word for twisting

"You forgot one thing," she said, twisting at the engagement ring.

She turned her face away, twisting free of his arms.

He reached for the door, doubt twisting his guts.

She threw herself down to avoid the second, sent another knife in its direction to distract it, and leapt up, dancing and twisting through the lightning streams.

Traffic by street cars was made impossible by the twisting of the tracks.