Deletion of Jumpswing (2nd nomination)

Comment: I changed my vote from previous nomination, because after more careful consideration it indeed appears that all information is coming from a single source, related to the article author hence it is |original research. And no clai ms of notability beyond claims it is taught in a couple of studios (again, the claim comes from the same source
Stance: delete
Cited policy: Wikipedia:No original research (WP:NOR)