Long story short, it had long been urban legend that Atari buried thousands of copies of ET for the Atari 2600 after the game flopped. It's considered by many to be possibly the worst console game...ever.
Having had it myself, I can verify it was indeed awful. Worst ever? Not sure about that.
I wonder if they'll find any of the Swordquest games too?
Good luck trying to re-sign Sting. My experience has been that after you release wrestlers (especially injured wrestlers who are of no use to you...) they tend not to like the concept of joining back up with you when they are healthy.