WTF happened to my loosely knit plot line?!

yeah, I am having some of those moments. they're mainly about my wip. suddenly it is going in another direction. I guess that's the chance you take when you don't have an outline. I was cranking out a super scene and then the end didn't seem to fit. it was anti climactic. the story wants to go another way and I'm not sure how I feel about that except for WTF. I had no idea that was going to happen. damn you compelling characters and interesting action! I had to send it off to a reader to see how she felt about the ending. she's a pretty good with feeling that stuff out. I'll keep writing on the track it's on. maybe it will work out.