[thejeff]

If a spectator may offer a sugestion?

If you don't want to riak taking a province with a stealthy unit, simply set him to retreat.

Sure you'll lose him if discovered, unless on your own borders, but you can scout to your heart's content without fear of going rogue.

Actually reading the rules, any stealthy attack without permission is considered a violation. Taking the province is not necessary. Since the game considers catching a scout to be an attack on the province by the scout, the rules would have to be amended to allow non-attacking stealth units to be caught without consequences. Orders to retreat should be enough to signify non-hostile intent.