Maybe possible to pull the axis with a strong magnet, flip it and insert it and hope for hitting the forks. I checked my engine that is open with all in.
kmb69 might be right, work from oil pan side and avoid open the cases again.
It must be possible to grip the fork shaft from the oil pan side and push it out. Hope that the forks will stay so shaft can be reinserted the correct way.
See photo with yellow arrows. I have not mounted the oil pan, engine rest on white soft foam.