I have read some very well, thought out, and eloquent responses, so, I did not want to chime in, but, here goes.....
I can honestly say that I don't have any sympathy for the FIL under any circumstances. What he did was wrong, plain and simple. Felony though, I don't know if I'd go that far, but punishment still needs to be dealt.
It just really makes me sick when I hear of this type of behavior. It happens quite frequently in my area and I think at a bare minimum, of course this is just my opinion, if you do that and get caught, you lose the right to hunt for a MINIMUM of 5 years. That gives you the time to reflect on the bone headed move that you made.
I've had the shot over the years where the deer I shot, looked like the one I wanted, only later to go out and fill the doe tag, and see a nicer buck. I think could of, should of, would of, and kick myself in the pants for taking the first deer. Then, I've thought, okay, this will not happen this year, I'm going to wait on the one that I've put to bed for a few weeks (sometimes days), scouted him hard, know his routes, know his habits, and know without a doubt, that I will have in in the morning!! Hunt hard and I mean hard all season, and never see him and pass up several that are shooters, maybe not trophy, but shooters still.
Well, we are supposed to be good stewards for our sport and mentors to the younger hunters, and this type of behavior displays neither.