I may need to use my hands as a shock absorber to take up slack to kill the flair/pancake early and use a sweeping motion and/or wrist snap to get back to fade position.
If I may add to this because I think some of Lylenc's advise may be lost in translation. Some kites prefer a stopping motion in the pancake before pulling into the fade. (Lylenc's "shock absorber" )
My Deepspace UL is a good example of this and I am still working the bugs out but....
You may want to think of it as three inputs to get to the fade when flying straight down from the top of the window.
1) Slack to get the kite into the pancake (you may also want to play with how flat you go as well maybe try stopping before the kite is completely flat)
2) A small tug or good line tending to take up slack and stop the rotation (Lylenc's shock absorber)
3) Either a sharp tug or a steady pull to bring the kite to the fade position, and yes the steady pull is very similar to the fade launch.
I hope this might be of some help and good luck!
Off subject but I just recieved my straps from Norm P. in the mail today. Thank you sir!!

Hoping to get out this weekend and use them to try this fade challenge if the rain will hold off!!