Looks like it gets stuff in these locations, so those should be emptied manually of the related files
Inquisitor.bundle (in Library/InputManagers/Inquisitor/)
Inquisitor folder (in "your user"/Library/Application Support/)
inquisitor.pkg (in Library/Receipts/)
inquisitorPreflight.pkg (also in Library/Receipts/)
inquisitor folder (in Library/InputManagers/)
(Interesting,
http://www.tuaw.com/2008/01/07/inqui...ome-questions/)