Jeny's Surprisingly Stretchy Bind Off

I finished my Little Shells socks from The Knitter's Book of Yarn. I was anxious to try Jeny's Surprisingly Stretchy Bind Off (this link goes to Cat Bordhi's video of the technique) with these toe-up socks. I have knit many pairs that feel like there is a knotted tie around the top. I can get them on, but it feels like it could snap! Horrors!
This bind off is fantastic! Love the socks, very stretchy, but not baggy. Perfect for this yarn that may shrink a bit. (Knit Picks Bare merino/silk) I have two more skeins left from the batch I dyed with the Seacoast Knitters in October, 2008. (A very fun time!)