Just So! Having been witness to all sorts of shop disasters (only ONE of my own thank goodness!) I agree with you wholeheartedly. Inspection shows the crack runs almost all the way through on both sides. Similar to if the bolt had been over tightened on a brittle cast iron piece. It would be possible to simply replace the bolt, and the washer/bolt assembly would hold the plate and broken piece in position, but thats a half assed way of doing things, and I am no fan of that mode of operation.