Whoever is shorting is probably doing so because the stock is trading at the equivalent of a two year high, with a pretty wide spread, so there are going to be those who want to short it at $0.35 and try to cover at $0.22, just as there are those who want to buy at $0.22 and sell at $0.35.
I'm not worried about it right now, because I think it's to be expected.