Glad you got it sorted re: the 5K. Don't expend energy hating him - I'm just glad for you that it's over. You are free!!! Yes, he's a jerk and there are lots of jerks in the world so the best revenge is to live a great life and never think of him again. Hard to do, I know, but I think you can do it.

An insightful psychiatrist told me years ago that hate and anger can bind you to someone. Hate is not the opposite of love. Indifference is the opposite of love.