Predator offices in Jacksonville saw the first shaft I broke..just ask the guy who does customer service there- George was his name? I know it's not proof I did it on a draw stroke, but that's where the witnesses from Sharpshooters come in..one was Jose if I remember correctly (I know it's a generic name, but he's a house player and everybody knows him.) The other guy that saw it is Native American, plays really good one pocket, and drives a really nice expensive car...I forgot his nick name though.
I'm not sure why you should feel you have to justify something you know to be true to some nitwits.
There's no doubt in most people's minds (as well as mine) that you're doing this on a "normal" draw shot...but let's be clear...your's isn't a "normal" draw shot. It's normal for you - but not for most others. You're stressing the shafts out over time. The laminate in the LD shafts you're using isn't holding up to the stress you put on them time after time after time. Bend a paper clip in half - it won't break - bend it back and forth numerous times and it finally snaps in two...STRESS!
Very simple solution that has been stated numerous times...change your stroke or get used to breaking LD shafts...