A ‘butterfly’ is a method of removing the complete side of an inverted 5 door vehicle and can provide excellent access for personnel, equipment and can also provide a suitable extrication pathway. With both doors closed and the B pillar de trimmed:

Remove outer wing (fender) and expose hinges. Spread and/or cut hinges and check strap. Make a large relief cut in the sill (rocker panel) close to the base of the B pillar. Open the rear door.

Make a 2nd relief cut at the rear of the base of the B pillar (remember the base is uppermost). Cut the top the B pillar ensuring you avoid all hardened construction. Carefully lift the B pillar and two doors and place on the underside of the vehicle.