I stopped lending out all my shares at Fidelity couple of months ago precisely because of Chickenlittle warning about impending short squeeze and potential risk of failure to deliver back shares lent out to short-sellers
Really folks, pulling in your shares is the market equivalent of buying that many shares at this point. That many shares are locked up and unavailable to selling. Public Service Announcement. If a growing number of longs withdraw their lending shares it will further add fuel to the fire.