Lexington Biosciences Inc. (LXGTF)

[Sabretooth0071]

That is the same link that I posted,
Shorts only Borrow the shares. those shares were NOT sold, therefore they don't have to be bought back they are returned and the lender (broker) who gets a fee for the loan. The actual owner of the shares gets nothing and in most cases doesn't know his shares are being borrowed.
By locking your shares in at a set price you stop the shares from being borrowed. I guess the worst that can happen is the Share Price reaches you locked price and they get sold, but then you'd win anyway.