Page 422 - Bob Holtzman "The Field Guide to Knots How to Identify, Tie, and Untie Over 80 Essential Knots for Outdoor Pursuits"

5. The knot will capsize as it tightens, losing some of the visual appeal it has when loose, but becoming
very secure.

Untying: Each working end is captured by a bight in the standing part of the

same rope. Starting with either rope, push the bight in the direction of the
standing part, then pull slack from the standing part, and finally remove the

working end of the opposite rope.

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