Just guessing here, but that could just be a poorly phrased way of saying "If it turns out some other execs (not actively participating) knew and failed to stop it, they could face charges too...".
At least that's my hope.
edit; Although the article seems to imply the Feds can crack down on those who didn't know, that seems to not actually be cited as fact, just speculation.
edit 2; You're right. That's Whacked. And apparently I can't read.