I've had this happen to me twice this year. Once last week and once about 2 months ago. To this day I have no clue as to what or why it happend. Both sailed high, way high, like almost a foot over my block target. When I usually have a flyer it's usually only by about 5 to 6 inches, these were crazy high! I have a fully contained hostage rest, not a drop away. Thought that maybe I absent mindedly loaded my arrow upside down? I don't know. Maybe let the bow torque upwards upon release? Kinda kicks your confidence level down a little when you miss like that, but both times I went right back to grouping. I don't have an answer for ya but i know how ya feel, been there. just hope it doesn't happen at the wrong time.