Utsusyoki Sanctuary (near Podgornaya Stables, Faron Region)

How do I get through here? In the video, you can see that I went through the last stage of the sanctuary in a different way than the developers intended. I dragged the metal cube from the last room, connected it to the platform and moved this structure to the bottom of the location, so that it was possible to move from the platform with the ability of the hand up, on the platform, where there was a chest. Then took the wagon and dragged it to his platform, so that from it already glide to the end of the sanctuary.
I'd like to know what I was supposed to do here, since I just didn't figure it out.