Never had that happen before and it broke off even with the block so doesn't look like any fun to dig it out. It had no support bracket but it will when I replace it.
Glad you had a fun and safe trip Fred, Chicago traffic sucks in my book, got stuck in it a few times.
Had the same problem with my current engine, and it was not fun to remove the broken part. Take it easy for a day or two before you dive into that project.