I was taken by a fraudulent roofer once for a good bit of money. Had two choices really, deal with it myself, or have him arrested. I opted for having him arrested. He was convicted and ordered to pay $25 a month restitution since he claimed no income really. It will take him a lifetime to pay back the full restitution, but periodically I go down to the courthouse and remind them that he hasn't paid in quite a while. They go rattle his cage and he starts paying again. It's the principal. Yes, I'm out the money and will likely never get it all back. But, every time he has to pay he is reminded that there are consequences for bad behavior.

I would say take him to court for the same reason. Do you need the money? Probably not. But, it would be a nice bonus if he did settle his debt in the process.