Check out the move demonstrated twice from 3:25 to 3:45. He opens his shoulder left while leader her to step to his right, then moves out of the way so she can continue moving along that tight rope. Yeah, I know this stuff looks simple and boring but to me, it's brilliant!
I have learned this figure but as two separate parts and by different teachers. Osvaldo and partner put it nicely together here.
I just wonder if you can use this style of tango in your milongas? Here the dancing has taken different direction and other styles and ways are more popular. I have two followers who can accept this style so we can train together sometimes.