Here is the culprit: you can see the exhaust valve lifter raised up out of the aluminum casting. The rocker is removed and looking inside the valve spring you should see a nice slim valve stem but you see a much thicker valve guide that has popped up. The top of the valve stem can be seen as it is being held up by the valve spring retainer cup. So you know that inside the valve spring that you see, there should be slim valve stem. This guide won't let the rocker arm push the valve down but the pushrod simply forced the rocker to break down the middle. I'll post a picture of the broken rocker later on sometime. We were lucky that the pushrod didn't bend as well.
