Are they really going to bust down your door looking for a snake....? Don't let ANYONE in without a warrant that is clearly displayed and handed to you. Doesn't matter if its your state's game commission or state police, they all need a warrant.
Appeal the decision, state your case clearly, give the names, dates and times you spoke to people already about the issue. That email can't be deleted on your side, unless you did it.
Worst case scenario find a way to get the snake to me...I live in PA about 6-7 hours outside of your state...I can hold it for you until you either get sorted out or otherwise...