...2 cloudy/milky balls of yuk just below the surface.
This screams fungal infection. BUT WAIT!!! It could not affect the beer too bad. It might give it a sour-ish taste, but I say don't waste it...
In fact that infection might give you a better taste! Who knows? If so, you'll have been glad you saved it, and maybe even wish you cultured it.
I work with fungus for a living... whooo... and we get fuzzy balls in our media sometimes and it's a cross contamination issue. What we do to prevent this is primarily two things that can be done at home.
1- Don't siphon/transfer/cool beer outside or near an open window during the spring/summer/early fall months (late march to late september), because it's during this time that wild fungus sporulates and release the spores into the air, and boy these things get everywhere.
2- Before you open anything up and sample, transfer... whatever, get a spray bottle and fill it with any solution of >=40% alcohol and spray it around you.
I follow #1 religiously when brewing, and only do #2 if I'm worried about something specifically.
BUT don't forget #3: Relax, don't worry and have a homebrew.
