My chicom fleabay ones arrived today.
After about an hour, I FINALLY got them back into their default 6x6x6 cube configuration.
You need to untangle them into one long thread, then make rings of 12, into tubes stacked 6 rings high, not alternating in the "fruit stacking" zig-zag but straight, then you squash two of the tubes together which makes 2/3rds of the cube, then squash the last tube flat onto that.
Except you do this about 20 times where rows get out of whack, or it sticks to itself in the wrong place and you have to start over.