This was a glitch that happened to a buddy of mine as we were play... anyway he was draven with a thresh support. He had activated an axe at the same time that he grabbed thresh's lantern and it looked like the old Nautilus glitch when he lost his hook. One hand down; one hand up. He was using the gladiator draven skin.
Steps as far as I know(NOTE: I'll be back to edit this soon as my friend can tell me more)
Level up Q
Have a Thresh throw a lantern on you
Activate your Q
Grab lantern at the exact same time as q activated
Loose movement animation and remain in described stance
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