Grim attempted to protect Becket from their attack until, his own arm being nearly cut off by a stroke aimed at the primate, he fell to the ground. He was able to crawl away to the altar where the archbishop's other clerks had hidden, and escaped with his life.
Grim tried to protect Becket from the attack, but when an assault on the primate nearly severed his arm, Grim fell to the ground.  He managed to reach the altar where the archbishop's other assistants were hiding and escaped unharmed.