There was a company holiday party recently. The coworker that I unintentionally slighted the other day spotted me there.
He said, "Hey! Long time, no see! And that's as it should be."
I said "hey" back, and then, "Despite what I said before, it's always good to see you."
"In that case," he said, "Cheers."
"Cheers," I said, and we clinked beer mugs.
Hopefully that was enough to undo the effects of telling the truth in such a bad way. Drinks and clinking glasses sometimes have a surprising force; they can undo a lot of things.