I try to plan ahead for worst case scenarios like this. Having researched this upon delivery of my first-ever-trailer-with-slide-outs, and noting the degree of difficulty involved, I developed two plans.
Plan A. Call the mobile RV repairman. If none is available, got to Plan B.
Plan B. Remove identifying tags, put all five rounds from my S&W .50 cal. revolver into the thing, and find another hobby.