Heeey mate! I'm glad you noticed it, I was so excited when I managed to do this more naturally. It is basically a combination of finger style with pops only, with no slapping. It is kind of a claw movement with the index finger to make that pop on the G and D strings. I might do a video in the future explaining some of these, I'm still trying to master it :)
Great job! I love your tone and how you play finger style on the E/A strings and then pop on the D/G strings as you discussed in your reply to rdt777. Another thing I am very impressed by is the speed with which you switch between the high fingerstyle doubling of the "I'm levitating" part back to the low B slapping and popping, like you do for the first time at around 0:46 in the video. All around terrific performance, keep 'em coming.
