American Wheat turned extra light wheat while in keg?
I haven't posted much since usually I find the answers I need, but this one I'm not sure of.
I have been all grain brewing for about a year, and usually have no issues filling a corny, carbing for a couple weeks and serving until empty...
This time, I made an American Wheat, all-grain - ABV ended up about 6.6%, served down to the last 25 % or so, then it started blowing foam as if it was kicked, so I untapped it and left it to clean later.
About a week past, and I was going to clean the keg to move on, and I remembered it didn't feel empty, so I tried a pour...
Low and behold, I poured off several pints!
Unlike the previous 75% of the keg, these pints were noticeably clear, and they had much less body, if any. The taste was still good, but watered down and highly carbonated, like seltzer. Actually tastes like a light wheat.
Any ideas what happened?
I don't think the keg froze or anything, as I haven't had any frozen bottles in the kegerator.
Haven't touched the regulator since I switched to serving from 10 down to 4 or 5.