I'd be very leery of an ex-Saddam ANYONE shopping a story around - we got burned believing some of his ex-scientists. Also, the MSM would be bleating about "how could our intelligence have missed that", and "why should we believe them now, blah blah blah...."
The ONLY way anyone will believe Saddam had them is if Saddam admitted it and told us where they were. Even if they found a huge pile of Nukes buried...the MSM would say we planted it.
Give it enough time, and you'll find some Iraqi @sshole who insists that those WMDs really, really, really ended up in John Kerry's basement.