That's exactly right.
"Sorry, it's the red options that have worth, all of those blue options were devalued in [some arcane legal event] and are worthless now."
I've thought about talking to a lawyer, but I'm guessing that what they did was totally legal, on the order of selling the company's assets to a company of the same name for a dollar in hand, or something like that, with some kind of structure to keep the major investors happy.