This is the pic from my buck this year, a few weeks ago. I was about 22 feet above the deer at 18 yards. the arrow still deflected upward about 3"(even though splitting the rib!!!) and luckily smashed into the spine instead of going over like it sounds yours did. Arrows DO NOT (& all projectiles) always keep going the diection they are headed when they first make impact. You can minimise this by not taking severely angled shots but sometimes....
