OK, I was watching TV after school like usual and I noticed (while watching The Famous Jett Jackson) that after Sylverstone and Artemis locked Raphael in the airplane, the camera zoomed back and you can EASILY see that there is a wedge of some sort jammed under the front wheel of the plane. Even if Sylverstone hadn't sabotaged the plane, Raphael would have been stuck where he was because of the wedge.