RE: I need Legal advise
You're the Captain of the Fire Dept - wouldn't burning your field be arson?
Additonally, try making a call at the state level. I don't know who is in charge of KY's wetlands (KDEP?), but they may have issues with someone burning wetlands - especailly when they are on someone elses proprety!
If the guy is buddies w/ the Sheriff, try talking to the prosecutor. The Sheriff doesn't decide if charges are filed, the prosecutor does.