Well, don't forget that your going to have to go through every file you edited and remove anything added, and revert to the old SELECTs.

But my PM hack actually has that - somewhat. For each line, I replaced, I kept the original, just in case.

And if you look in the install file, there are actually a bunch of lines that will delete the tables, fields, and templates added (commented out of course).

Uncomment them, add an "exit;" just below and you can uninstall completely