Do you have the Dynasty 2006 Owner manual?? If so check page 171 for how to manully override and get the room in. The hyd manifold is located right front, by the step. DO NOT overtighten the valve when closing after the room is in. Also I would put a wedge, board whatever, between the wall and slide to keep it from creeping out as you will no longer have hyd pressure holding it in.
Good luck