[Frodo]

If your dip stick says you're good, I'd say you're good. If you're worried about it, I'd do the filter removal option you mentioned. Don't feel stupid...my first oil change in the Box I had an inadequate set-up to catch the old oil. (The catch pan was big enough, but I was unprepared for the velocity with which the stuff exits the car.) Ended up with several quarts on the driveway. Cleanup took as long as the oil change...