If a divy is declared the Short is on the hook for paying the divy to the person or firm who loaned the shares. There is no forced cover.
When a legitimate company announces a divy there are some who chase after the divy buying the stock, resulting in the PPS possibly increasing. If it goes up enough, then one may or may not have a Short squeeze.
Of course this has nothing to do with KMAG. A previously suspended grey stock with no past history of a divy, and no known plans to issue one. There are no Shorts, no NSS positions in KMAG.