Have you ever been screwed over like this in fantasy football?

I was up by 3 in my fantasy league in a game which would have got me into the playoffs. I had nobody else playing and the other guy had the steeler Defense. I watched in horror as Townsend ran the pick back and dove into the endzone. As a chance at over $1500 fell from my grasp. If only Witten had actually tried to tackle him. Anything like this ever happen to you?