what yeast was it? i've heard some coming out being funky like that.
also, you'll be fine. there are quite a number of us that chill that way, not that SPECIFIC way however... but chilling over night that is
if you throw the airlock in there, it will unfortunately suck in a bunch of the sanitizer, but that shouldn't harm anything.
if that happens again and it's getting late, at flame out, throw the lid on the kettle and sit it outside or on the floor somewhere till it cools enough (takes about 24-36 hours in some cases for my beers)