Dirty Pin lock quick disconnects

I recently had an issue where my first pour tasted kind of sour then the second pour was fine. I took a part the quick disconnect on the serving side and discovered it was nasty inside. I soaked it before in oxyclean but never took it a part. My hope is that my beer didn’t get infected in the process. obviously I can’t doing anything about it now but my question is what are the chances that my keg didn’t get infected. I am hoping the pressure of the keg kept anything from seeping in. I had the serving line on for about 3 days before I noticed. This is my first keg in about two years because I was living in Europe.

Your chances are pretty good, I think. Keep the keg cold and you should be fine.