Nah, Fury hadn't gone unbridled, I would have been more specific if he had. This attack is sort of a mix between his energy glaive ability and a basic push, it's a pushing attack with some burn to it. 

It would definitely throw Kanitah away from Fury unless he held on insanely tight, but it probably wouldn't be powerful enough to obliterate his arm due to all the energy he lost when his concentration was sabotaged. It would probably just launch him away from Fury and cause some fairly significant burning and kinetic damage. 

If Kanitah tries to block it with his hand though it would probably break his fingers and whatnot.