I agree with the vet - I was going to tell you the same thing (especially since your little guy seems to be happy and comfortable).. watch him for a while and it will probably go away - and it did!
I always feel that the most important indicator of our dog's health is the way they behave and the way they feel. If they are acting no differently, are eating and going to the bathroom normally, are playful, happy, and affectionate -- and don't appear to be experiencing any discomfort --- with something like a "crooked tail" or many other things, I'd certainly wait a while before I got very concerned. But, like your vet mentioned, you need to "keep an eye on them."
Glad everything is better.
Carol Jean |