The below picture is the reason not to make sharp turns while dragging a full box blade.
I broke the sway bar connector bolt bracket.
Kubota Part # TC050-71352
$51
It's not just box blades, any ground engaging implement needs to come up before turning tightly. on the whole, at 50 bucks you got off cheap. could have hurt more expensive stuff.
But, don't feel bad, you're in good company.