Thanks for the response.
After reviewing the tutorial, I can pretty much safely assume the effect was done using a 3d program, seeing how smoothly and easily the cubes rotated in the tutorial. The falloff effect was also most likely used at the end to do the center-border reveal.
Unfortunately, I don’t have a 3d program at the moment, so I’m still going to attempt to recreate everything in After Effects, but for the most part my question was answered.
Thanks for the help guys.