What would you do?

I just want to add, there is a slight possibility its not his fault. he may have a behavior disorder, chemical deficiency etc. Mental disorders sometimes aren't apparent. Also if he's on medications, that screws with peoples personalities. When you feel like crap all the time, it easy to forget to be nice to people.

Ryan....You took the words right out of my mouth. At his age he may have a mental disorder which makes him act the way he acts. Still no excuse but the problem is that the MIL needs help from someone and you shouldn't write her off because of him. It's not her fault that he's an A-hole. I don't know the solution but if you leave your tractor over there, what's he gonna do, sue you for helping??

Treblig