You made a great point about injuries proceeding from wrong form, i.e., moving / loading a muscle or joint in a direction / manner that it's not designed to move. (sbnation.com)
wrong use of software for wrong form - factor (thegeek.life)
year statute of limitation kicks in when FTB will leave you alone, if you have filed a tax return (not quite our case, because we filed wrong form). (money.stackexchange.com)