Yes, I had saved the files to my Mac, but in an older version. More on that after this:
You should be able to transfer files to iTunes:
1. Open iTunes on your computer. Select your iPad under "Devices" in the bar on the left. Select Apps from the bar across the top. Scroll down to "File Sharing" in this window. Find and select the iWork program (you may need to scroll down a bit in that sub-window).
2. On your iPad, open the iWork document you want to move to your computer, click on the tool icon - looks like a wrench - in the upper RH corner, and choose Send to iTunes. The file should show up in the iTunes File Sharing window on your computer. When it does, click on "Save To" and pick or create a folder on your computer for these files and move them there. You'll have to do this for each file on your iPad. Slow and tedious if you have a lot of them.
These files will be in two places on your computer now. One is the folder to which you just saved it, and the other is a folder somewhere in iTunes. It's important to remember that changing one of these files DOES NOT change the other one. If you manipulate the file in any way on your computer then you will need to go to the SAME place in iTunes and Add the file back to the File Sharing list. You'll get a message about a duplicate file. Tell it to overwrite.
3. If you have the iWork suite on your computer I would go to this folder from the Finder and double check to see if the iWork files transferred from your iPad are really there in a form that your computer will open. I'll presume they are.
4. Turn off iCloud for iWorks on your iPad. Settings-> choose the iWork program from the left hand bar -> turn off "Use iCloud". If your files are then deleted then you can move them back to your iPad from iTunes. In the iWork app on the iPad, tap on the little + button on the list of files for that app, and tap on Copy from : iTunes. This is how you'll move files back and forth to your computer from now on. I haven't figured out how to move iWorks files through DropBox. Apple appears to have made file transfer proprietary through iCloud or iTunes. :-(
Now, a bit more about what happened in my case.
Everything was fine from January 10, and my iPad generated a backup onto iCloud automatically. On January 11, all those files vanished before my eyes from my iPad, and when I got home to check on my Mac, they were also gone from the iWork tab in Safari. I was pretty much dead in the water for the day, as far as my iPad was concerned. On Friday I attempted to do a reset, and the iPad asked if I wanted to backup from an iCloud backup. I chose that option, but when I went to any of the iWorks programs, the 'evaporation' visual effect happened all over again. I tried resetting again, this time turning off my iPad wifi, but when I tried to open any of the iWorks apps my iPad informed me that I had to be connected to iCloud. I knew how that was going to turn out, so I began reading these and other web discussions about iCloud. Seems there was a huge iCloud problem back in Oct '11, and some of it looked similar. The ONE piece I gleaned that looked hopeful was the possibility that the backup could be locked in the user Library on my Mac. The user Library is a hidden file folder, and you have to do some tinkering to make it visible. I'm not going to tell you how here, because you can seriously muck up your entire user experience. If you want to find out about that then do a web search about making your User Library visible. You'll find it. BE CAREFUL. The path for your iPad iWorks files is Library->Mobile Documents.
The backup was there, but not in a form that my Mac could open. There were folders that corresponded to the missing file names, but they contained pieces of the file broken apart into separate files. I had no knowledge of how to put them together, and the information in the discussion groups indicated that the file suffixes would look different than they did. Somehow, iCloud had changed the suffixes, so that iCloud didn't recognize the file!
Not wanting to muck with that backup, I made a copy of it and then I called Apple tech help. It took days, and I think the engineers also recovered the iCloud backup, but when they sent instructions to the tech help guy they forgot to attach the file. The tech help guy and I talked by phone and emailed several times, and finally he called me with to update me on his progress to reach the engineers and get them to send the file. That's when I told him of my knowledge of the backup in my User Library. He knew a trick, the one that was used last October to recover some folks' files, was looking at the engineer's instructions for my particular case, and realized that with the backup in my User Library that he might have all the pieces. We worked it out, but it was a lot of steps. I got back the January 10 backup, completely.