Post up a pic of the "white mold". Could be a pellicle forming of desirable bugs found in a sour. If thats the case, I would leave it alone for extended aging. See Post up a pic of your pellicle thread for examples.
If it is mold, you might just want to rack under and drink it up. With either one, you will have to be careful with sanitization moving forward. Any plastic that touches it might be risky moving forward. I have a second set of equipment that is for sour duty, but is segregated.
Primary #1: Cascadian Dark Ale #2: Empty
Secondary #1: Berry Rhubarb Wine #2: Empty #3: Empty #4: Empty
Kegged: Irish Red
Bottles: Surly Bender clone, Big 50 Barleywine, Framboise Lambic, Dark Belgian Strong, Kicked by a Moose Scotch Ale, Russian Imperial Stout, Sparkling Elderflower Wine, Barolo Wine, Peach Rhubarb Wne
On Deck: Spruced Winter Warmer