The lender can demand the shares and the the stock borrow deal at your prime broker rings you and says we want stock back, "called back " is the industry jargon and you must comply and buy back next business day. There are only 2m short - this is not a factor, there will be ample liquidity in first day of trading believe me for these positions to be closed out even if they are all called back
GSW Price at posting:
$2.92 Sentiment: None Disclosure: Not Held