bowens 500w definitely cant freeze motion pin sharp.not even the 1000watter.
been there, done that.
i can definitely start a thread on freezing motion, but there will be endless flames and i dont see the point.
i've clocked more than 10000 shutter counts on my d200 for dance photography so i dare say i've experienced quite a fair bit.
no doubt there are lights other than profoto and broncolor that can freeze motion but i reckon only the 2 mentioned can do it pin sharp.
some pics appears to be sharp but when you pixel peep it....it really aint.
like you,i've trashed thousands of pics because of limps blurring.
thanks for sharing your pics.