Well, this is terribly sad news.  There was quite a collection of sling making tutorials.  Some appear to be recovered and some not.

It would be most tragic if the unrecovered tutorials were forever lost.

It also seems that T.J. Potter's site is lost as well.  Lot of good tutorials there. 

Thank you for even attempting recovery.  All of these technological details are beyond my ken.  Give me a typewriter (manual, of course) and a stack of index cards.

Quite so. This is precisely what I told The Bowler after she inadvertanly vaporized Captain Amazing. I do hope you have a better time recovering the files that we did Captain Amazing. I dare say that even Dr. Heller is beginiing to lose hope.