I have over 3000 hours in the 1900D and have never had a prop go into ground idle in the flair, except that one time my FO pulled the power levers over the gate into beta, obviously putting the props into ground fine which is even worse. Not saying that this is what you did Cornholio, just giving another perspective.

Now, the props will go into ground idle independently during touchdown in a crosswind. A way to counter this tendancy is to land with the props pulled slightly back, around 1550 RPM (full forward is 1700). This technique can be especially helpful when landing on an icy runway where one prop is in ground idle, while the other is momentarily still in flight idle making for an interesting slide down the runway. Just don't forget to throw those props full forward if you need reverse.