Unlike Mary, Dean had seen Sam in action before, just not for years and certainly not in a place that didn't have Ruby. That little fact flew out the window of Dean's mind the moment he saw his mother tossed. He had more important things to do, like try to rip off the bony arm that hurt his mom. What he wouldn't give for a good chain saw right about now.

He had to settle for a blast of bullets toward the head as he ran forward toward the Golem. If Dean had to gnaw off the thing's arm, then he would.