What can happen? Well, something goofy. What does happen? Pretty much nothing.
Just putting a disclaimer in there for lawyer reasons

. I guess I can come up with scenarios that could happen if the moon was aligned with Jupiter and the cow jumped over the moon and landed on little boy blue etc.
Maybe in the middle of a holeshot it breaks and you pegleg and break the diff, Maybe it actually breaks off at the yoke and the axle goes flying around and smashes into things as it spins. Maybe the piece gets stuck and you will have to dig it out of the diff.......whatever, I've broken tons of them. Least of your worries.
The ONLY thing I MIGHT be concerned with is over revving on a launch
MB