Yep, I *know* it must be frustrating! If there *is* an "upside" it might be that *many* sites buckle under the onslaught of a good Digg, so you are not alone and Diggers "get it" when there is a problem (evidenced by the digmirror link for your site.
Depending on the particular Digg or Slashdot intensity, your shared hosting account might not have survived even *without* the recent (horribly timed for you, I admit!) DH "brokedness".
Hey, things *do* break, and this "breakage" could not have come a a worse time for you given the Digg. But just remember that "the grass is always greener" in the neighbors yard and it is *very easy*, with webhosting in particular, to jump "out of the frying pan and into the fire".
BTW, I enjoyed your article and found a couple of gems in there I had not been aware of. Good Job!
--rlparker