Don't worry too much about it. 2 years ago I let my pumpkin ale sit in my brother's garage for 2 months in secondary (we couldn't find mutual time to bottle our 2 beers). <en we finally made time to bottle, there was that white stuff floating on top of my beer. Although it was more like a complete coating of the entire top of the secondary...I used a sterilizes rod to move it to one side of the carboy, and siphoned off from the other...left the white stuff (as well as about an inch and a half of beer) behind in the carboy. After conditioning for a couple weeks, the pumpkin ale was great...You'll never keep JUST the yeast you pitch in your beer, and the longer it sits, the more likely it'll grow out stuff (unless you keep the temp down!) Do your best to leave that funk behind and your brew should be fine.