Agree with above. 14 days is far too long and will risk an infection.
If I am going to re-use yeast from primary trub, I take it within an hour or two of racking. Using a sanitzed measuring cup, I will either direct pitch into wort, wash and pitch, or wash and store in fridge.
Primary #1: Surly Bender clone #2:Berry Rhubarb Wine
Secondary #1: Empty #2: Empty #3: Empty #4: Sparkling Elderflower Wine
Kegged: Dark Side Dunkel, Irish Red
Bottles: Big 50 Barleywine, Framboise Lambic, Dark Belgian Strong, Belgian Golden Strong, Kicked by a Moose Scotch Ale, Apfelwein, Russian Imperial Stout, Barolo Wine
On Deck: Spruced Warmer, CDA