Hello everybody ! I've done it !!
I've just done it by myself without any help.
I've been inspired by your first option Parwaz : I've blocked the cyclone lying on the floor against my left foot and pushed the cone down with the other foot. That's it !
So a quite conventionnal way... sorry for not providing a video gag experimenting the brick way...
Let's try to get the screws out now, that should be easier
Many thanks, you saved me
Goodbye from Paris