I'm glad you opted to delete the email. He may not realize it, but he was trying to rope you back into his drama. If he's got problems on his job, he needs to be speaking to someone over there or his HR person.
Stay positive today if you can.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
