Troy,

Man, you showed some restraint not kicking that guy's ass right there!

I can sort of understand how people could bring themselves to trespass and hunt, but to deliberately
sabotage somebody else's hunting - that is just sick.

Like you said, these aren't just yahoos either, they are government employees and are all in on it.
What a bunch of scum.

I think the best thing is to press charges. This is too outrageous to let go with a warning.
A lot of states have different laws on trespassing. In some states if an area is not posted then
the people have to be warned first (of course that is for people who claim they didn't know they
were trespassing - a defense). Also, by pressing charges, you will have an easier time getting
the sheriff out there in the future and getting damages and injunctions.

I wouldn't be shocked if they are sick enough to read your posts for info, after all, they were willing to
spend the time to stake you out and ruin your hunting efforts.