I have used two "6" injury rated catchers several times. They have NEVER.....NEVER been injured at the same time.
Leo you must have had a computer glitch occur and although crazy things happen from time to time, that is the exception not the rule.
One of the biggest mistakes a newbie can make, however, is to use 2 of those C, and have a 1b that also has a catcher rating and THEN you can get nailed!
:)