I can tell by your post you haven't watched the earlier Shippuden episodes, Kakashi showed Naruto his imperfected rasengan, Rasengan is a Fuuton no Jutsu (Wind Release Technique) meaning Kakashi has indeed used Wind Release before seeing as you cant just form a Rasengan all wheelie kneelie.Even an imperfect Rasengan takes rigorous training(Minato didn't even master it), don't believe me google it, its true. And the Uzumaki Clan were renowed for their exceptional and powerful Fuuton-based jutsu, Wind Release is an Uzumaki Clan affinity, again use google if you still don't believe me....