Gordy, I'm in the Sydney Bethel area. Before 'jumping in' I would think that there must be more to the story. Has your friend told you any more details?
I DO believe that the dubs break up families but I know that they would not encourage a new convert to abandon his wife and children.
Another thing that makes me wonder at the veracity of this is the sentence:
He told me that I am not the wife he wants, he wants a Jehovah's Witness wife
That just isn't on! If he were to try that, he'd be DFed for adultery.
In short, more information needed.
cheers,
Ozzie