Yes, well I never intend to... but I'm not gonna lie and say I never reacted with more force than was needed, acceptable or I was comfortable with... accidents happen! Sometimes you don't realize your own strength compared to the size of the bird. Fortunately, I recognize my folly and try not do it again. Doing something repeatedly would makes it abuse... and accidental incident (that is taken care of if need be) is not.
So yes, I have crossed the line... (even when their action was at another bird and not me) but it WAS part of my learning process!
I won't cull for an attempted wing dance from a cockerel. Everyone gets a chance as testing boundaries is natural... I do cull for repeated stupidity to challenge the food giant, after a SHORT adjustment period.... While things DO breed forward...and I won't intentionally do that... I am NOT the sum of my parents' stupidity. My 3 siblings absolutely are peat and repeat... but I STAND ON MY OWN apart from them!

(but that's still 75% awful and 25% "well" adjusted

)
Nobody culls hens for attitude.. and they are some serious beeyotches... and THAT breeds forward as well... into their sons... I love my Marans... my pure cockerels rock... but my favorite hen an Easter Egger puts out the nastiest cockerels ever... even when bred to my very acceptable Marans rooster.

They are pretty birds too.