Wow - talk about serendipity!! Just think of all the unlocked RVs/utility trailers those guys won't be stealing, now that they've been caught. Sounds like they made a habit of this since they were well-prepared; and that's kind of scary.
In the event of something like that being stolen.... there's a website called searchtempest.com that will search websites like ebay and Craig's list for huge distances; assuming these guys were going to resell the popup. I had a friend who recovered a stolen kayak by watching these "local" sales websites.