OK guys sorry for the delay. I had a 8hourofwork 5hourofsleep 15hourofwork Weekend, so I wasn't kinda able to do anything.
Now since I have a very low pixel cam I thought it would've been pointless to make a vid about such a quick move.
You wouldn't have recognized anything even going frame by frame.
SO I MADE A DESCRIPTION WITH PICS.
1. Hold the string like this, the distance (lol) between the yellow and the green strings should be 4-5 cm or so.

2.Now you have to to two thigns at the same time: Hop the yo on the green string and make the red string go behind the yellow/green strings and after that aroung the yo.
It is illustrated by the following pictures. (I made the red string orange when it goes behind the strings for easier following)

3.

4.

5.

6.

And to get the towerish formation just let go of POINT A.
To get the other formation (in the vid) you have to land the orange sring in the gap of the yo (instead of making it fly around it). It's a bit of a lucky move but with some practice it can be landed.