it is dog shape, so let's call it doggy style chidori.
I think it's about time to see this kind of move from kakashi since he is the one who invented chidori and taught it to sasuke. and don't forget he is also a genius that acknowledged by sannin so he's gotta be able to do shape manipulation that sasuke can.
I guess he won't die anytime soon, or I hope he won't. he's too awesome to die.
but kishi love killing awesome character I guess(jiraiya, sarutobi, 4th...)