[theophilusscribe]

It is probably safe to say that all of those types of cases had some other mitigating circumstance attached. Like this one, for example. There are no more details, but if the FBI was involved, it had to have more to it.

Lyndeborough resident makes plea agreement in kidnap hoax
http://www.mledger.com/2005/headlines/mlheadlines120502.shtml
Steven Bromley, 35, of Lyndeborough faces up to five years in prison and up to $250,000 in fines after admitting he lied to an FBI agent during an investigation into a kidnapping hoax he orchestrated this summer.

[Cboldt]

It is probably safe to say that all of those types of cases had some other mitigating circumstance attached.

That's what my intuition tells me, but there may be cases of self-disappearance / self-abduction that were prosecuted. I'm still looking. "self abduction" turns up all sorts of bizzare stuff ;)