Improper

A1: circle L 1.0; N swing

A2: DTH, #2 lady right hand high, left hand low, so #1 man ducks under arch and men swap sides and lady twists around; return

B1: P B&S

B2: Bal ring, pet; Bal ring, CA twrill.

It's an easy dance but with a twist, literally! Thanks, Vicki Herndon, for sharing.