Translation of "Unfolding" in Japanese

The man was folding and unfolding his arms.

その男は腕を組んだりほどいたりしていた。

The exchange unfolding in front of my eyes had not a single millimetre of a gap in which for me to slip.

目の前で繰り広げられるやり取りは、俺が入り込む隙なんて一ミリもない。