It must be more or less impossible for the lender to get back there shares :) I hope it gets bloody, would be so nice to watch. I think the float is way to small for them to get back millions of shares without doing some 1000% pps increase.
There is no way that I believe that they will buy these collateral shares back in the public market. One would think they know they don't have to otherwise they are stupid to sell so many shares so cheap lately.