I tried that this AM. It doesn't work.I've had it happen twice to me and the only way I could fix it was to get four guys and lift the bed up. I've tried jumping it at the battery and at the starter (as per the manual) with a dual battery 1 ton pickup and it didn't work. I don't think I tried DEWFPRO's suggestion about disconnecting the battery from the the starter and just using the jump battery.
I guess I'll need to get an A-frame and hoist to lift the bed.