It is impossible to interrupt the spin on dual wield ultra fury now. Not sure if this is a glitch or if this is what was intended, but when you go into the spin now, you have no option but to complete it. It used to be you could press either attack button to stop it at that point, or interact with something in the environment (i.e. taking the lust energy from the lust imps in Gotham Wastelands). It would have nothing to do with jump cancelling or clipping at all as far as I can tell, so I can't imagine this is what was intended...?
I'm worried about this too, it would really be a setback if it weren't cancelable. It'd leave you open as an easy target to block counter.
