On my 2005 39S Excursion I've cranked the bedroom slide in with a 1/2" ratchet from under the bed - very easy to do.
Big Katuna, it sounds like you cranked in your bedroom slide from the outside - what year is your Expedition? I've briefly looked for a similar crank on my larger slides, but haven't found one underneath the slide yet - need to do a little more looking.
To the OP, you should buy a couple of extra fuses for your bedroom slide. It uses the old style round fuses with glass centers. They're a slow blow fuse that are sometimes hard to find when you need them, but a regular fuse of similar amperage will work to get by. We've only blown it once and have no idea why it went, but we now have spare fuses.
Bill
Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.