You can actually saw a wooden fuselage into three pieces right behind the TE of the wing and right in front of the stab. Re-align the three parts in a jig and use internal 1/16" plywood scabs and fg cloth to re-join the parts. Of course, you would need to cut away the bottom sheeting to do this. But, it could be done in two hours or less. Considering the amount of work already in the plane, that's what I would do.

David