broken alum bats happens a lot more than you'd think. its just most are usually the cheaper ones that college baseball teams dont use. they make ones which actually flex in the handle and are ncaa approved. something Ive never used or was even aware of til recently. I do know the TPX bats most of the ranked teams used actually flex in the barrel. a flexing handle surely seems a bad idea for homeruns.
Now that I think about it, the incident I saw occurred during a HS jamboree in February, and it was pretty cold.