I've never heard of it either. I told the shop I wanted the old motor back for spare parts. I'm going to take it apart to see what exactly happened. They are dropping a complete motor with 75000 miles on it, back in the car.
They said the cam lobes broke the journals off in the block so we will find out soon hopefully. I will take pictures and put them on here as soon as I can.
Please excuse the typos as I am doing this on an I phone that I'm not familiar with. Thanks for the help.