I;'ve had this happen to my siphon line, and beer lines before. I just ran some hot water followed by warm StarSan solution, followed by cold water through them. The haze remains, but the beer tastes just fine.
Primary #1 (SS Brew Bucket):
Primary #2 (SS 7G Chronical):
Kegged & Waiting:
ON TAP: Oatmeal Stout[br /]Holiday IPA