[ROARosen]

The other commenter is right that shorts have unlimited risk, and put option are defined, but they can technically be short by selling calls which would make them expire-able.

But honestly I doubt it was even possible to be short so much with options alone on such a low cap company (as it was before this blew up)

[whimsicalism]

Is it wrong to call selling calls short selling? Regardless, I think it was puts that they were buying (so sorta the contrapositive).