The arms look like they touch each other at a 90 degree angle, which can lock up due to gravity.
When tilted slowly this might pose little problem, yet when flung due to an opponent this could do you in.
I might be wrong and your cad design is sound. but I can't help guestimating how it would react to the effects within the arena.

Anyone else willing to weigh in on this one?

Edit, try animating it when flung sideways...