Years back , I and my hunting partners ran up against a group of guys who acted very similar to this fella .
Their actions bordered on psychotic .
The landowner admitted to us that he had become scared of them and was frightened of what they might do if he revoked their permission to use his land .
We pretty much acqueisced to his fear of these guys and left them to their own , the landowner was very old and didn't need the drama .

Fast forward.....
We always knew these guys were "on the edge" but found out just how bad one of them really was .
He murdered a cop and then blew his own brains out.....

My point is this....
I wouldn't get too personally involved with this fella .
Talk to your landlord and get his position , then get EnConn involved .
Let EnConn deal with this guy , I don't doubt he is the type who makes them think "this is why I do this job" .
And they deserve every bit of enjoyment they can wring from taking down a psycho .