You should be ok. The electric water heater runs on 110V, so as soon as you unplug from the pedestal it will not heat the water. I'm guessing from your original post that you had the electric heater on and the LPG heater off. Also, unless you opened the low point drains or your water heater drain your water heater should still be full of water. We leave ours full all the time and only empty it when it's time to winterize - we've never had a problem with stinky water.
Enrico and Donna + 2 kids
RAM 2500 + Jayco Jay Flight 25BHS
Black tank Quick-e Flush, MaxxAir Vent cover, TV bracket and LCD TV, added Slideout awning, bunk ladder, added socket and reading light to top bunk, added bathroom fan switch near light switch, insulated all externally accessible storage, sealed pass through storage from interior of trailer, LED lights throughout, added LED lights to storage compartments