That might get a bit conspiratorial. What is most likely is that they are double dealing after the snagging. I.e. they may not have gone there with the intent and collusion of being an inside job, but once they are there, the US, through Gore, will be forced to back channel and de-facto double deal and conspire with DPRK -- all at a price.
Liberal Koreans also got kidnapped by the Taliban, and released at a cost, but not before their own leader was killed by Taliban. People warned this Korean group NOT to go into danger's way.
Interesting. That could be true; it wasn’t a set-up from the start, but it has provided a golden opportunity (golden in every sense!). It will be interesting to follow this; in fact, it will be interesting to see if it even gets much press coverage in the US.