pharmer,
Actually, a close friend of mine who is a conservation agent in Missouri just issued some tickets recently to some folks who reside in Missouri, but have been claiming residency in Iowa.
As far as explaining goes, I doubt it's something "winable" in court. Aren't computers a wonderful thing? It's hard to think anyone would believe he/she could get away with something like this.
Not sure about Iowa, Missouri has gone to a "point" system, similar to points assessed against your driver's license. Some of these violators will be getting Missouri hunting privileges revoked/suspended and won't be hunting (legally) for a while. Too bad, eh?
MO