The problem is that false allegations do happen, but are rare, and generally found in bitter custody battles.
I can offer an alternate explanation for a recantation: He was quietly offered a huge sum of money to recant. If this is NOT the case, then I would expect a criminal/civil case to be filed against him. If one is not filed, it would lend more credence to my explanation.
The truth may set you free, but recognizing a lie for what it is will go a long way to keeping you out of bondage in the first place.