Lurch, just say that a school principal who knew about a colleague’s rape of a child (give him the exact circumstances of Law’s knowledge, in a time period just like Law’s, too), was found out.
Now, assume the man is a Catholic; he’s sorry, he is removed from his job, he confesses, does penance etc. (Of course, you’ll just have to “assume” he does penance, just like you would regarding any person, because you can’t be privy to the actual confession).
Now, this man was an excellent principal so far as administration, etc. goes; has a lot of germane knowledge, has had years of experience, etc.
So, after a few years, he gets a job as an adjunct or consultant to a school.
It’s still “in the field”, but the perks are nowhere near what he had; still, it is a good use of his talents and he does his best, trying to prove that he is sorry for his failures and still wants a chance to be useful.
Now, either you’ll see the parallels to the Cardinal, and agree, this man should be able to have a chance at a job. . .or you’ll think that, too bad, there are some things that are just unforgivable, and this man should not only not ever have a job, but should be booed, hissed, and vilified forever.
IOW, you’ll be saying that God is wrong, that there are some sins He WON’T forgive, and that we don’t have to have Him “forgive us our trespasses as we forgive those who trespass against us”. . .instead, we have to have Him “forgive us OUR trespasses, but DON’T forgive those who trespass against us”. . .