Ok, well at least now I've found confirmation that there's a problem with ispazio. Thought I had screwed up my phone.
Several days ago I got tired of waiting for saurik to come out with that easy patch for 3.01, so I updated, rejailbroke, and restored my phone(a bit more pita than I thought, even with pkgbackup but that's another story). I guess the timing was just a coincidence, or it had been down and I hadn't noticed. I tried restoring Rotation Inhibitor but it wouldn't install.
I had thought that apps like pkgbackup actually backed up installed apps, but it seems that it still needs to fetch them from their repositories to reinstall them. That really sucks.
I hope ispazio isn't down for good. I'd really like to get the Rotation Inhibitor back. Was also trying to install iTransmogrify. Thankfully, I didn't have anythign else that I use a lot installed from ispazio.