TH,
I agree. Let it go.
You were right.
Three times you mentioned how bad you feel about it. That says more about who you are than your (justified) actions and words at that moment do.
Angry and scared can be an overwhelming combination.

Peace,

Gardener

"My soul, be satisfied with flowers,
With fruit, with weeds even; but gather them
In the one garden you may call your own."
Cyrano deBergerac