Shaman....Here's your problem, you're too close to the situation! The answer is obvious. Due to the DST change, the sewerage in your pipe has encountered a time warp. This is no ordinary time warp though, this is Bermuda Triangle grade time warp. Somewhere, someday, someone will encounter a tremendous pile of "rare earth" that wasn't there before. If they carbon date it (now THAT conjures up a very unpleasant image!!
) they will be even more amazed to discover that this pile, while appearing to be "just out of the oven" in a manner of speaking, is actually many, many years old. Just think of it...your poop will be the stuff of legends, and stories will be told around the campfire for generations to come.
Bet you never thought you'd achieve immortality in this fashion!!!!
BTW....what have your poor dogs been doing for entertainment since the pipe stopped flowing?