I (foolishly) hit version update recently and found that I can no longer get into Uber server games. I didn't buy the new game yet. Should I save my game & character files to disk, uninstall & reinstall? Will that even work? Do I have to buy Undrentide to restore my access?

I want to say up front that a full 80% of my characters are fully legit, but that on bad days (someone cuts you off in traffic, flips you the bird, etc.)its nice to go in and do 500 damage to a Knoll. Its kind of a stress reliever (and No, I never PK or pickpocket other players)

What it says in the 1.30 readme is the following:
You can download a reverse patch that downgrades your game to version 1.29 at http://nwn.bioware.com/support/patch_revert.html