Yea, cut the remaining hinges to separate the aileron from the wing. Then re cut new hinge slots next to the old ones. Put in as many hinges as were originally there (four?). You can cut hinge slots with a #11 blade, but the easiest way is with a Great Planes Slot Machine electric hinge slotter. Kinda a shame to buy one for just one job. Maybe you can borrow one from someone in your club. Or, just use the hobby blade. You'll have to buy some new CA hinges. Lots of companies make them.