Madonna's new video 'Sorry'

The song is alright per se, but that's not what I am on about here. Several people have spotted references to a certain musical on rollerskates in the video. I've just watched it and YES, Madonna & co. dancing on skates and doing the locomotion choreography.... could it be any more StEx?

Watch it, pay attention at the end of the video and tell me what you think. ;)

Madonna - Sorry