Well, it may not be 1.8 pounds of fat...it's a bit early to tell! That sucks that no one picked you up at the airport!
As far as eating 2 pints of ice cream are concerned, I am unclear as to what and who exactly does that "show" ?

Don't be hard on yourself. You slipped back into an old behavior, but you clearly have so much success under your belt that this is but a brief blip in the grand scheme of things!