Well the purge got rid of almost 2/3 of my posts (the title is the % remaining). After I made 2 passes through the blog, I realized the actual number of posts that I wanted to delete was fairly small. The rest is merely collateral damage. Oh, well. I promise my next post will be related to actual rockets!
(I noticed some of the items that I added back have had their post date moved up. There are probably other unintended consequences too.)