Question:

Perry Kalynuk fires a teacher a week before Xmas break. Should he give, without asking permission, the fired teacher’s email address to her replacement so that the replacement can email the fired teacher for help?

Answer:

No. That’s a d*** move.

You fired someone. I’m sure that there were reasons to do that, but if you make that choice, you suffer the consequences, which means that you can’t ask them for help.