Geez, that really sucks mate. I bought my house 9 years ago and it's more than doubled in value in that time, but I've got a friend in your situation, and he took such a hit when he sold his house that he's still paying for it years after selling it at a loss.
At the same time I agree with those who've suggested that you move, while there are obviously lots of memories in that house, you don't want to become a victim of those arseholes, you're not living in a movie, you're not Clint Eastwood, and at the end of the day, it's only money that you'll lose if you split.
Pay one of the friendlier gang members to burn it down and hope the insurance will cover what you owe. Cheers, Terry.
