You can buy the DVD from Tower.
The men involved DID get arrested. Some reps for them say that they're hard at work to get a second edition out. I bet they have enough film right now to make a ice little compilation deal.
Yeah, search under "Bum Fights" and also check out "Bum Hunter" - they're the same folks I think.
What's so funny is that they make bums fight eachother for their livelihood. If you win against this guy, you get a sandwich.