It would be very easy to get title insurance with this. There is no defect at all. The mortgage would be listed as an exception to title no matter who owns it.
I think he is talking about the next guy to try to take title after foreclosure. When a mortgage is assigned 3 different ways and one forecloses to secure his portion of the debt, what happens to the coequal claims of the other 2 trustees / mortgage pools?
He predicts it will force the back office paperwork guys to get on the ball, thus a win - win situation.