It's an old story -- someone made false accusations to try to get sole custody. It's a particularly disturbing one, in that if the accused hadn't been so well-documented in the course of his day (buying lunch, going to the bank), he probably would be in jail now. It's also upsetting, because there are hints within the coverage that it should have been possible to _prove_ the story was false (if, indeed, the rope was tied as described). Police just apparently had trouble imagining that someone would make up a story like the one in question.
Weird. But I guess this is one of the reasons men are much more likely to be convicted of a crime than women: people just cannot believe women would do things like this, but they're quick to believe men would do awful things.