I use 3056 for a lot of wheat beers and I have never done this. I have never had a problem with sourness from the yeast. I know people top crop to harvest the yeast for reuse.
It is not certain that everything is uncertain.
Secondary:Oud bruin (2), Raspberry melomel
Bottled: Oktoberfest, Imperial Punkin
Kegged: Wild Ale, Dark Mild
Gallons to date 2012: 47