Currently, there is a command to re-enable a regex by ID (SULWatcher: edit 123 enable), but there is no corresponding command to disable a regex by ID (SULWatcher: edit 123 disable or similar). You have to do SULWatcher: remove badword (foo|bar) instead, which requires more copy-pasting.
removeRegex() already can take an index= param with the ID, there's just no IRC command hooked up to it.