I'm still scratching my head a bit as well. The strange thing is that usually people view a spirited mailing list as a sign that a module is healthy! :-)
I know the cdbi mailing list was quite active and there seemed to be a strong community around it. This was certainly aided by the fact that Tony was on the list and an active participant. I hope things will blow over and the community can continue to contribute to such an excellent module.
Until then, I'm glad there are some copies of the wiki and list content out there because there is a ton of useful info in there.